VideoMetaInfo.java
| Index Score | ||
|---|---|---|
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org.xnap.io |
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XNap 3 |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| JAVA0076 | JAVA0076 Use of magic number |  |
| RETURNS | Number of return points from functions | |
| JAVA0242 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| LOOPS | Number of loops | |
| OPERATORS | Number of operators | |
| JAVA0049 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0007 | JAVA0007 Should not declare public field | |
| JAVA0116 | JAVA0116 Missing javadoc: field 'field' | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| LOGICAL_LINES | Number of statements | |
| JAVA0128 | JAVA0128 Public constructor in non-public class | |
| CYCLOMATIC | Cyclomatic complexity | |
| LOC | Lines of code | |
| PROGRAM_LENGTH | Halstead program length | |
| BLOCKS | Number of blocks | |
| ELOC | Effective lines of code | |
| COMPARISONS | Number of comparison operators | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| JAVA0264 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0119 | JAVA0119 Control variable changed within body of for loop | |
| OPERANDS | Number of operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| LINES | Number of lines in the source file | |
| UNIQUE_OPERANDS | Number of unique operands | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| JAVA0285 | JAVA0285 Dereference of potentially null variable | |
| SIZE | Size of the file in bytes | |
| UNIQUE_OPERATORS | Number of unique operators | |
| LINE_COMMENT | Number of line comments | |
| JAVA0171 | JAVA0171 Unused local variable | |
| JAVA0008 | JAVA0008 Empty catch block | |
| FUNCTIONS | Number of function declarations | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| NEST_DEPTH | Maximum nesting depth | |
| WHITESPACE | Number of whitespace lines | |
| PROGRAM_VOLUME | Halstead program volume | |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| EXEC_COMMENTS | Comments in executable code | |
| JAVA0173 | JAVA0173 Unused method parameter | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| DOC_COMMENT | Number of javadoc comment lines | |
| COMMENTS | Comment lines | |
/*
* XNap - A P2P framework and client.
*
* See the file AUTHORS for copyright information.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.xnap.io;
import java.io.IOException;
import java.io.RandomAccessFile;
import org.apache.log4j.Logger;
import org.xnap.util.Formatter;
/**
* Class to extract a video's play length and resolution.
*
* The video parsing code for avi and mpg files is taken from the ziga
* project. See README for more information.
* The video parsing code for asf files is taken from the avifile project
* (http://avifile.sourceforge.net/).
*/
public class VideoMetaInfo
{
// --- Constant(s) ---
protected static final int PACK_START_CODE = 0x000001BA;
protected static final int SEQ_START_CODE = 0x000001B3;
protected static final int GROUP_START_CODE = 0x000001B8;
protected static final int MAX_FORWARD_READ_LENGTH = 50000;
protected static final int MAX_BACKWARD_READ_LENGTH = 3000000;
protected static final int ASF_FILE_PROPERTIES_SIZE = 80;
protected static final int ASF_STREAM_PROPERTIES_SIZE = 1024;
protected static final int GUID_SIZE = 16;
// --- Data Field(s) ---
private static Logger logger = Logger.getLogger(VideoMetaInfo.class);
private MetaInfoFile file;
// --- Constructor(s) ---
public VideoMetaInfo(MetaInfoFile file)
{
this.file = file;
}
// --- Method(s) ---
public static boolean handle(MetaInfoFile file)
{
try {
new Parser(file);
}
catch (IOException e) {
return false;
}
file.put("provider:video", "true");
return true;
}
public static boolean hasInfo(MetaInfoFile file)
{
return "true".equals(file.get("provider:video"));
}
public int getHeight()
{
return ((Integer)file.get(MetaInfoFile.HEIGHT)).intValue();
}
public String getInfo()
{
return Formatter.formatLength(getLength());
}
public int getLength()
{
return ((Integer)file.get(MetaInfoFile.LENGTH)).intValue();
}
public int getWidth()
{
return ((Integer)file.get(MetaInfoFile.WIDTH)).intValue();
}
public static class Provider implements MetaInfoProvider {
/**
* @see org.xnap.io.MetaInfoProvider#handle(org.xnap.io.MetaInfoFile)
*/
public boolean handle(MetaInfoFile file)
{
return VideoMetaInfo.handle(file);
}
}
private static class Parser {
protected final transient GUID ASF_HEADER_GUID =
new GUID(0x75b22630, 0x668e, 0x11cf,
new byte[] { (byte)0xa6, (byte)0xd9, (byte)0x00, (byte)0xaa,
(byte)0x00, (byte)0x62, (byte)0xce,
(byte)0x6c });
protected final transient GUID ASF_FILE_PROPERTIES_GUID =
new GUID(0x8cabdca1, 0xa947, 0x11cf,
new byte[] { (byte)0x8e, (byte)0xe4, (byte)0x00, (byte)0xc0,
(byte)0x0c, (byte)0x20, (byte)0x53,
(byte)0x65 });
protected final transient GUID ASF_STREAM_PROPERTIES_GUID =
new GUID(0xb7dc0791, 0xa9b7, 0x11cf,
new byte[] { (byte)0x8e, (byte)0xe6, (byte)0x00, (byte)0xc0,
(byte)0x0c, (byte)0x20, (byte)0x53,
(byte)0x65 });
protected final transient GUID ASF_AUDIO_MEDIA_GUID =
new GUID(0xf8699e40, 0x5b4d, 0x11cf,
new byte[] { (byte)0xa8, (byte)0xfd, (byte)0x00, (byte)0x80,
(byte)0x5f, (byte)0x5c, (byte)0x44,
(byte)0x2b });
protected final transient GUID ASF_CODEC_LIST_GUID =
new GUID(0x86d15240, 0x311d, 0x11d0,
new byte[] { (byte)0xa3, (byte)0xa4, (byte)0x00, (byte)0xa0,
(byte)0xc9, (byte)0x03, (byte)0x48,
(byte)0xf6 });
private MetaInfoFile file;
private RandomAccessFile in;
public Parser(MetaInfoFile file) throws IOException
{
this.file = file;
in = new RandomAccessFile(file, "r");
try {
if (!lookForAVI()) {
if (!lookForMPEG()) {
if (!lookForASF()) {
throw new IOException("Invalid file");
}
}
}
}
finally {
try {
in.close();
} catch (IOException e) {}
}
}
private void setHeight(int height)
{
file.put(MetaInfoFile.HEIGHT, new Integer(height));
}
private void setLength(int length)
{
file.put(MetaInfoFile.LENGTH, new Integer(length));
}
private void setWidth(int width)
{
file.put(MetaInfoFile.WIDTH, new Integer(width));
}
protected boolean lookForAVI() throws IOException
{
boolean avihFound = false;
in.seek(0);
String s = readChunk();
if (s.equals("RIFF")) {
in.skipBytes(4);
s = readChunk();
if (s.equals("AVI ")) {
while (true) {
s = readChunk();
in.skipBytes(4);
if (s.equals("LIST")) {
s = readChunk();
if (s.equals("hdrl")) {
s = readChunk();
int avihLength = readBigEndianInt();
if (s.equals("avih") && avihLength >= 56) {
double microSecPerFrame = readBigEndianInt();
in.skipBytes(12);
double totalFrames = readBigEndianInt();
// set member variable length
setLength((int) (totalFrames * (microSecPerFrame / 1000000L)));
in.skipBytes(12);
// set members
setWidth(readBigEndianInt());
setHeight(readBigEndianInt());
in.skipBytes(avihLength - 40);
avihFound = true;
}
}
}
else {
break;
}
}
}
}
return avihFound;
}
protected boolean lookForASF() throws IOException
{
boolean haveMainHeader = false;
boolean haveStreamHeader = false;
boolean haveCodecListHeader = false;
ASFMainHeader mainHeader = null;
ASFStreamHeader streamHeader = null;
ASFCodecList codecList = null;
in.seek(0);
logger.debug("looking for asf");
while (!haveMainHeader || !haveStreamHeader || !haveCodecListHeader) {
GUID guid;
long size;
guid = new GUID();
size = readBigEndianLong() - 24;
logger.debug("GUID " + guid);
logger.debug("size " + size);
if (size < 0)
return false;
if (guid.equals(ASF_HEADER_GUID)) {
logger.debug("Found header, skipping 6 bytes");
in.skipBytes(6);
}
else if (guid.equals(ASF_FILE_PROPERTIES_GUID)) {
logger.debug("Found asf main header");
if (size < ASF_FILE_PROPERTIES_SIZE) {
logger.debug("main header too small");
return false;
}
mainHeader = new ASFMainHeader();
in.skipBytes((int) (size - ASF_FILE_PROPERTIES_SIZE));
haveMainHeader = true;
}
else if (guid.equals(ASF_STREAM_PROPERTIES_GUID)) {
logger.debug("Found stream props");
streamHeader = new ASFStreamHeader(size);
if (size > streamHeader.count) {
in.skipBytes((int) (size - streamHeader.count));
}
haveStreamHeader = true;
}
else if (guid.equals(ASF_CODEC_LIST_GUID)) {
logger.debug("Found codec list header");
codecList = new ASFCodecList(size);
haveCodecListHeader = true;
}
else {
logger.debug("Unknown packet, skipping " + size);
in.skipBytes((int)size);
}
}
if (haveMainHeader && haveStreamHeader && haveCodecListHeader) {
setLength((int)(mainHeader.play_time / 10000000L));
if (streamHeader.videoHeader) {
setHeight(streamHeader.height);
setWidth(streamHeader.width);
}
return true;
}
return false;
}
protected boolean lookForMPEG() throws IOException
{
in.seek(0);
if (nextStartCode()) {
if (in.readInt() == PACK_START_CODE) {
byte[] b = new byte[6];
Long initialSCR = null;
in.readFully(b);
if ((b[0] & 0xF0) == 0x20) {
initialSCR = getMPEGSCR(b);
}
else if ((b[0] & 0xC0) == 0x40) {
initialSCR = getMPEG2SCR(b);
}
boolean seqStartCodeFound = false;
while (true) {
if (nextStartCode()) {
if(in.readInt() == SEQ_START_CODE) {
seqStartCodeFound = true;
break;
}
}
else {
break;
}
}
if (seqStartCodeFound) {
b = new byte[3];
in.readFully(b);
setWidth((((b[0] & 0xff) << 4) | (b[1] & 0xf0)));
setHeight((((b[1] & 0x0f) << 8) | (b[2] & 0xff)));
boolean groupStartCodeFound = false;
in.seek(in.length());
while (true) {
if (previousStartCode()) {
if(in.readInt() == PACK_START_CODE) {
groupStartCodeFound = true;
break;
}
}
else {
break;
}
in.seek(in.getFilePointer() - 4);
}
if (groupStartCodeFound) {
b = new byte[6];
Long lastSCR = null;
in.readFully(b);
if ((b[0] & 0xF0) == 0x20) {
lastSCR = getMPEGSCR(b);
}
else if ((b[0] & 0xC0) == 0x40) {
lastSCR = getMPEG2SCR(b);
}
if (initialSCR != null && lastSCR != null) {
setLength((int) (lastSCR.longValue()
- initialSCR.longValue()));
}
}
return true;
}
}
}
return false;
}
protected final String readChunk() throws IOException
{
byte[] b = new byte[4];
in.readFully(b);
return new String(b);
}
protected final short readBigEndianShort() throws IOException
{
byte[] b = new byte[2];
in.readFully(b);
return (short) ((b[0] & 0xff) | ((b[1] & 0xff) << 8));
}
protected final int readBigEndianInt() throws IOException
{
byte[] b = new byte[4];
in.readFully(b);
return (b[0] & 0xff) | ((b[1] & 0xff) << 8) | ((b[2] & 0xff) << 16)
| ((b[3] & 0xff) << 24);
}
protected final long readBigEndianLong() throws IOException
{
return (readBigEndianInt() | (readBigEndianInt() << 32));
}
protected Long getMPEGSCR(byte[] b)
{
long scr;
int highbit = (b[0] >> 3) & 0x01;
long low4Bytes = (((b[0] & 0xff) >> 1) & 0x03) << 30
|(b[1] & 0xff) << 22 | ((b[2] & 0xff) >> 1) << 15 |
(b[3] & 0xff) << 7 | (b[4] & 0xff) >> 1;
scr = low4Bytes;
scr /= 90000;
return new Long(scr);
}
protected Long getMPEG2SCR(byte[] b)
{
long scr;
int highbit = (b[0] & 0x20) >> 5;
long low4Bytes = ((b[0] & 0x18) >> 3) << 30 | (b[0] & 0x03) << 28
| (b[1] & 0xff) << 20 | ((b[2] & 0xF8) >> 1) << 15 |
(b[2] & 0x03) << 13 | (b[3] & 0xff) << 5 | (b[4] & 0xff) >> 3;
int sys_clock_extension=(b[4] & 0x3) << 7 | ((b[5] & 0xff) >> 1);
scr = low4Bytes;
if (sys_clock_extension == 0) {
scr /= 90000;
return new Long(scr);
}
else {
//???
return null;
}
}
protected boolean nextStartCode()
{
byte[] b = new byte[1024];
int available;
boolean startCodeFound = false;
try {
for (int i = 0; i < MAX_FORWARD_READ_LENGTH && !startCodeFound;
i += available) {
available = in.read(b);
if (available > 0) {
i += available;
for (int offset = 0; offset < available-2; offset++) {
if (b[offset] == 0 && b[offset+1] == 0 && b[offset+2] == 1) {
in.seek(in.getFilePointer() - (available-offset));
startCodeFound = true;
break;
}
}
}
else {
break;
}
}
}
catch(IOException e) {
}
return startCodeFound;
}
protected boolean previousStartCode()
{
byte[] b = new byte[8024];
boolean startCodeFound = false;
try {
for (int i = 0; i < MAX_BACKWARD_READ_LENGTH && !startCodeFound;
i += b.length) {
long fp = in.getFilePointer() - b.length;
if (fp < 0) {
if (fp <= b.length) {
break;
}
fp = 0;
}
in.seek(fp);
in.readFully(b);
for (int offset = b.length-1; offset > 1; offset--) {
if (b[offset-2] == 0 && b[offset-1] == 0
&& b[offset] == 1) {
in.seek(in.getFilePointer() - (b.length-offset) - 2);
startCodeFound = true;
break;
}
}
if (!startCodeFound) {
in.seek(in.getFilePointer() - b.length);
}
}
} catch(IOException e) {
}
return startCodeFound;
}
protected class GUID
{
public int f1;
public short f2;
public short f3;
public byte[] f4;
public GUID() throws IOException
{
f4 = new byte[8];
f1 = readBigEndianInt();
f2 = readBigEndianShort();
f3 = readBigEndianShort();
for (int i = 0; i < f4.length; i++) {
f4[i] = in.readByte();
}
}
public GUID(int f1, int f2, int f3, byte[] f4)
{
this.f1 = f1;
this.f2 = (short) f2;
this.f3 = (short) f3;
this.f4 = f4;
}
public boolean equals(Object o)
{
if (! (o instanceof GUID)) {
return false;
}
GUID g = (GUID) o;
if (f1 != g.f1 || f2 != g.f2 || f3 != g.f3) {
return false;
}
for (int i = 0; i < f4.length; i++) {
if (f4[i] != g.f4[i])
return false;
}
return true;
}
public String toString()
{
return "f1 " + f1 + "\n"
+ "f2 " + f2 + "\n"
+ "f3 " + f3 + "\n";
}
}
protected class ASFMainHeader
{
public GUID guid;
long file_size; // in bytes
// invalid if broadcasting
long create_time; // time of creation, in 100-nanosecond units since 1.1.1601
// invalid if broadcasting
long pkts_count; // how many packets are there in the file
// invalid if broadcasting
public long play_time; // play time, in 100-nanosecond units
// invalid if broadcasting
long send_time; // time to send file, in 100-nanosecond units
// invalid if broadcasting (could be ignored)
int preroll; // timestamp of the first packet, in milliseconds
// if nonzero - substract from time
int ignore; // preroll is 64bit - but let's just ignore it
int flags; // 0x01 - broadcast
// 0x02 - seekable
// rest is reserved should be 0
int min_pktsize; // size of a data packet
// invalid if broadcasting
int max_pktsize; // shall be the same as for min_pktsize
// invalid if broadcasting
int max_bitrate; // bandwith of stream in bps
public ASFMainHeader() throws IOException
{
guid = new GUID();
file_size = readBigEndianLong();
create_time = readBigEndianLong();
pkts_count = readBigEndianLong();
play_time = readBigEndianLong();
send_time = readBigEndianLong();
preroll = readBigEndianInt();
ignore = readBigEndianInt();
flags = readBigEndianInt();
min_pktsize = readBigEndianInt();
max_pktsize = readBigEndianInt();
max_bitrate = readBigEndianInt();
}
}
protected class ASFStreamHeader
{
public GUID stream_guid; // type of media stream
public GUID error_guid; // data error correction used
public long time_offset; // presentation time (in 100-nanosecond unit)
public int stream_size; // size of type-specific data
public int error_size; // size of error correct data
public short stream; // number ( 1, 2 ... )
public int reserved; // usually the same in both streams:
// Eyes on me.asf: 0x62dffd4
// Alsou - Solo.asf: 0x10
// Baby one more time.asf: 0x10
// Cure_LastDayOfSummer.wma: 0x818f900c
// Windows Movie Maker Sample File.wmv: 0x3f
public int width; // witdth of encoded image
public int height; // height of encoded image
public byte flags; // shall be set to 2
public short data_size;
// BITMAPINFOHEADER bh;
public int count = 0;
public boolean videoHeader = false;
public ASFStreamHeader(long size) throws IOException
{
if (count < size - GUID_SIZE) {
stream_guid = new GUID();
count += GUID_SIZE;
}
if (count < size - GUID_SIZE) {
error_guid = new GUID();
count += GUID_SIZE;
}
if (count < size - 8) {
time_offset = readBigEndianLong();
count += 8;
}
if (count < size - 4) {
stream_size = readBigEndianInt();
count += 4;
}
if (count < size - 4) {
error_size = readBigEndianInt();
count += 4;
}
if (count < size - 2) {
stream = readBigEndianShort();
count += 2;
}
if (count < size - 4) {
reserved = readBigEndianInt();
count += 4;
}
if (!stream_guid.equals(ASF_AUDIO_MEDIA_GUID)) {
videoHeader = true;
if (count < size - 4) {
setWidth(readBigEndianInt());
count += 4;
}
if (count < size - 4) {
setHeight(readBigEndianInt());
count += 4;
}
if (count < size - 1) {
flags = in.readByte();
count += 1;
}
if (count < size - 2) {
data_size = readBigEndianShort();
count += 2;
}
}
}
}
protected class ASFCodecList
{
public final String[] names = { "Codec Name", "Codec Description",
"Information" };
public ASFCodecList(long size) throws IOException
{
byte[] buffer = new byte[(int)size];
in.readFully(buffer);
StringBuffer sb = new StringBuffer(buffer.length);
StringBuffer sbcount = new StringBuffer(buffer.length);
for (int i = 0; i < buffer.length; i++) {
sb.append((char) buffer[i]);
sbcount.append(i % 10);
}
logger.debug(sb);
logger.debug(sbcount);
int count = (buffer[16] & 0xFF) | ((buffer[17] & 0xFF) << 8)
| ((buffer[18] & 0xFF) << 16) | ((buffer[19] & 0xFF) << 32);
logger.debug("count " + count);
int index = 20;
for (int i = 0; i < count; i++) {
short ctype = getShort(buffer, index);
index += 2;
logger.debug("ASF reader Codec Type: " + ctype);
for (int j = 0; j < 3; j++) {
short csize = getShort(buffer, index);
index += 2;
if (j < 2) {
csize *= 2;
String s = getString(buffer, index, csize);
logger.debug(names[j] + " " + s);
}
index += csize;
}
}
}
public short getShort(byte[] buffer, int offset)
{
return (short) ((buffer[offset] & 0xFF)
| ((buffer[offset + 1] & 0xFF) << 8));
}
public String getString(byte[] buffer, int offset, int length)
{
StringBuffer sb = new StringBuffer(length);
for (int i = 0; i < length && buffer[i] != '\0'; i += 2) {
sb.append((char) buffer[i]);
}
return sb.toString();
}
}
}
}
The table below shows all metrics for VideoMetaInfo.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 113.00 | Number of blocks | |
| BLOCK_COMMENT | 18.00 | Number of block comment lines | |
| COMMENTS | 52.00 | Comment lines | |
| COMMENT_DENSITY | 0.12 | Comment density | |
| COMPARISONS | 76.00 | Number of comparison operators | |
| CYCLOMATIC | 116.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 18.00 | Comments in declarations | |
| DOC_COMMENT | 11.00 | Number of javadoc comment lines | |
| ELOC | 432.00 | Effective lines of code | |
| EXEC_COMMENTS | 3.00 | Comments in executable code | |
| EXITS | 39.00 | Procedure exits | |
| FUNCTIONS | 32.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 0.72 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 130.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 0.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 19.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 3.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains non-protected constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 2.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 8.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 84.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 0.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 0.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 0.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 0.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 2.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 2.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 0.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 1.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 1.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 1.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 20.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 26.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 1.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 4.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 6.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 1.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 0.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 0.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 0.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 2498.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 0.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 2.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 1.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 1.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 5.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 5.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 1.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 5.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 0.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 4.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| JAVA0289 | 6.00 | null | |
| LINES | 768.00 | Number of lines in the source file | |
| LINE_COMMENT | 23.00 | Number of line comments | |
| LOC | 586.00 | Lines of code | |
| LOGICAL_LINES | 296.00 | Number of statements | |
| LOOPS | 14.00 | Number of loops | |
| NEST_DEPTH | 7.00 | Maximum nesting depth | |
| OPERANDS | 1126.00 | Number of operands | |
| OPERATORS | 2601.00 | Number of operators | |
| PARAMS | 22.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3727.00 | Halstead program length | |
| PROGRAM_VOCAB | 393.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 108.00 | Number of return points from functions | |
| SIZE | 19065.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 325.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 68.00 | Number of unique operators | |
| WHITESPACE | 130.00 | Number of whitespace lines | |