ToadletContextImpl.java
| Index Score | ||
|---|---|---|
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freenet.clients.http |
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Freenet |
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 | |
|---|---|---|
| JAVA0034 | JAVA0034 Missing braces in if statement |  |
| JAVA0144 | JAVA0144 Line exceeds maximum M characters | |
| PARAMS | Number of formal parameter declarations | |
| EXITS | Procedure exits | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| RETURNS | Number of return points from functions | |
| JAVA0049 | JAVA0049 Nested block at depth N (maximum: M) | |
| OPERANDS | Number of operands | |
| JAVA0076 | JAVA0076 Use of magic number | |
| LOGICAL_LINES | Number of statements | |
| PROGRAM_LENGTH | Halstead program length | |
| OPERATORS | Number of operators | |
| CYCLOMATIC | Cyclomatic complexity | |
| BLOCKS | Number of blocks | |
| ELOC | Effective lines of code | |
| JAVA0081 | JAVA0081 Boolean literal in comparison | |
| JAVA0138 | JAVA0138 N parameters defined for method (maximum: M) | |
| LOC | Lines of code | |
| JAVA0075 | JAVA0075 Method parameter hides field | |
| UNIQUE_OPERATORS | Number of unique operators | |
| SIZE | Size of the file in bytes | |
| COMPARISONS | Number of comparison operators | |
| NEST_DEPTH | Maximum nesting depth | |
| PROGRAM_VOLUME | Halstead program volume | |
| FUNCTIONS | Number of function declarations | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0264 | JAVA0264 Integer math in long context - check for overflow | |
| EXEC_COMMENTS | Comments in executable code | |
| JAVA0123 | JAVA0123 Use all three components of for loop | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0173 | JAVA0173 Unused method parameter | |
| LOOPS | Number of loops | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| COMMENTS | Comment lines | |
| LINES | Number of lines in the source file | |
| DOC_COMMENT | Number of javadoc comment lines | |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
package freenet.clients.http;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.InetAddress;
import java.net.Socket;
import java.net.URI;
import java.net.URISyntaxException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Enumeration;
import java.util.Locale;
import java.util.TimeZone;
import freenet.l10n.L10n;
import freenet.support.HTMLEncoder;
import freenet.support.HTMLNode;
import freenet.support.Logger;
import freenet.support.MultiValueTable;
import freenet.support.URIPreEncoder;
import freenet.support.api.Bucket;
import freenet.support.api.BucketFactory;
import freenet.support.io.BucketTools;
import freenet.support.io.FileUtil;
import freenet.support.io.LineReadingInputStream;
import freenet.support.io.TooLongException;
/**
* ToadletContext implementation, including all the icky HTTP parsing etc.
* An actual ToadletContext object represents a request, after we have parsed the
* headers. It provides methods to send replies.
* @author root
*
*/
public class ToadletContextImpl implements ToadletContext {
private final MultiValueTable headers;
private final OutputStream sockOutputStream;
private final PageMaker pagemaker;
private final BucketFactory bf;
private final ToadletContainer container;
private final InetAddress remoteAddr;
/** Is the context closed? If so, don't allow any more writes. This is because there
* may be later requests.
*/
private boolean closed;
private boolean shouldDisconnect;
public ToadletContextImpl(Socket sock, MultiValueTable headers, BucketFactory bf, PageMaker pageMaker, ToadletContainer container) throws IOException {
this.headers = headers;
this.closed = false;
sockOutputStream = sock.getOutputStream();
remoteAddr = sock.getInetAddress();
if(Logger.shouldLog(Logger.DEBUG, this))
Logger.debug(this, "Connection from "+remoteAddr);
this.bf = bf;
this.pagemaker = pageMaker;
this.container = container;
}
private void close() {
closed = true;
}
private void sendMethodNotAllowed(String method, boolean shouldDisconnect) throws ToadletContextClosedException, IOException {
if(closed) throw new ToadletContextClosedException();
MultiValueTable mvt = new MultiValueTable();
mvt.put("Allow", "GET, PUT");
sendError(sockOutputStream, 405, "Method Not Allowed", l10n("methodNotAllowed"), shouldDisconnect, mvt);
}
private static String l10n(String key) {
return L10n.getString("ToadletContextImpl."+key);
}
private static String l10n(String key, String pattern, String value) {
return L10n.getString("ToadletContextImpl."+key, new String[] { pattern }, new String[] { value });
}
/**
* Send an error message. Caller provides the HTTP code, reason string, and a message, which
* will become the title and the h1'ed contents of the error page.
*/
private static void sendError(OutputStream os, int code, String httpReason, String message, boolean shouldDisconnect, MultiValueTable mvt) throws IOException {
sendHTMLError(os, code, httpReason, "<html><head><title>"+message+"</title></head><body><h1>"+message+"</h1></body>", shouldDisconnect, mvt);
}
/**
* Send an error message, containing full HTML from a String.
* @param os The OutputStream to send the message to.
* @param code The HTTP status code.
* @param httpReason The HTTP reason string for the HTTP status code. Do not make stuff up,
* use the official reason string, or some browsers may break.
* @param htmlMessage The HTML string to send.
* @param disconnect Whether to disconnect from the client afterwards.
* @param mvt Any additional headers.
* @throws IOException If we could not send the error message.
*/
private static void sendHTMLError(OutputStream os, int code, String httpReason, String htmlMessage, boolean disconnect, MultiValueTable mvt) throws IOException {
if(mvt == null) mvt = new MultiValueTable();
byte[] messageBytes = htmlMessage.getBytes("UTF-8");
sendReplyHeaders(os, code, httpReason, mvt, "text/html; charset=UTF-8", messageBytes.length, null, disconnect);
os.write(messageBytes);
}
private void sendNoToadletError(boolean shouldDisconnect) throws ToadletContextClosedException, IOException {
if(closed) throw new ToadletContextClosedException();
sendError(sockOutputStream, 404, "Not Found", l10n("noSuchToadlet"), shouldDisconnect, null);
}
private static void sendURIParseError(OutputStream os, boolean shouldDisconnect, Throwable e) throws IOException {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
e.printStackTrace(pw);
pw.close();
String message = "<html><head><title>"+l10n("uriParseErrorTitle")+"</title></head><body><p>"+HTMLEncoder.encode(e.getMessage())+"</p><pre>\n"+sw.toString();
sendHTMLError(os, 400, "Bad Request", message, shouldDisconnect, null);
}
public void sendReplyHeaders(int replyCode, String replyDescription, MultiValueTable mvt, String mimeType, long contentLength) throws ToadletContextClosedException, IOException {
sendReplyHeaders(replyCode, replyDescription, mvt, mimeType, contentLength, null);
}
public void sendReplyHeaders(int replyCode, String replyDescription, MultiValueTable mvt, String mimeType, long contentLength, Date mTime) throws ToadletContextClosedException, IOException {
if(closed) throw new ToadletContextClosedException();
sendReplyHeaders(sockOutputStream, replyCode, replyDescription, mvt, mimeType, contentLength, mTime, shouldDisconnect);
}
public PageMaker getPageMaker() {
return pagemaker;
}
public MultiValueTable getHeaders() {
return headers;
}
static void sendReplyHeaders(OutputStream sockOutputStream, int replyCode, String replyDescription, MultiValueTable mvt, String mimeType, long contentLength, Date mTime, boolean disconnect) throws IOException {
// Construct headers
if(mvt == null)
mvt = new MultiValueTable();
if(mimeType != null)
if(mimeType.equalsIgnoreCase("text/html")){
mvt.put("content-type", mimeType+"; charset=UTF-8");
}else{
mvt.put("content-type", mimeType);
}
if(contentLength >= 0)
mvt.put("content-length", Long.toString(contentLength));
String expiresTime;
if (mTime == null) {
expiresTime = "Thu, 01 Jan 1970 00:00:00 GMT";
} else {
// use an expiry time of 1 day, somewhat arbitrarily
expiresTime = makeHTTPDate(mTime.getTime() + (24 * 60 * 60 * 1000));
}
mvt.put("expires", expiresTime);
String nowString = makeHTTPDate(System.currentTimeMillis());
String lastModString;
if (mTime == null) {
lastModString = nowString;
} else {
lastModString = makeHTTPDate(mTime.getTime());
}
mvt.put("last-modified", lastModString);
mvt.put("date", nowString);
if (mTime == null) {
mvt.put("pragma", "no-cache");
mvt.put("cache-control", "max-age=0, must-revalidate, no-cache, no-store, post-check=0, pre-check=0");
}
if(disconnect)
mvt.put("connection", "close");
else
mvt.put("connection", "keep-alive");
StringBuffer buf = new StringBuffer(1024);
buf.append("HTTP/1.1 ");
buf.append(replyCode);
buf.append(' ');
buf.append(replyDescription);
buf.append("\r\n");
for(Enumeration e = mvt.keys();e.hasMoreElements();) {
String key = (String) e.nextElement();
Object[] list = mvt.getArray(key);
key = fixKey(key);
for(int i=0;i<list.length;i++) {
String val = (String) list[i];
buf.append(key);
buf.append(": ");
buf.append(val);
buf.append("\r\n");
}
}
buf.append("\r\n");
sockOutputStream.write(buf.toString().getBytes("US-ASCII"));
}
static TimeZone TZ_UTC = TimeZone.getTimeZone("UTC");
private static String makeHTTPDate(long time) {
// For HTTP, GMT == UTC
SimpleDateFormat sdf = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss 'GMT'",Locale.US);
sdf.setTimeZone(TZ_UTC);
return sdf.format(new Date(time));
}
/** Fix key case to be conformant to HTTP expectations.
* Note that HTTP is case insensitive on header names, but we may as well
* send something as close to the spec as possible in case of broken clients...
*/
private static String fixKey(String key) {
StringBuffer sb = new StringBuffer(key.length());
char prev = 0;
for(int i=0;i<key.length();i++) {
char c = key.charAt(i);
if((i == 0) || (prev == '-')) {
c = Character.toUpperCase(c);
}
sb.append(c);
prev = c;
}
return sb.toString();
}
/**
* Handle an incoming connection. Blocking, obviously.
*/
public static void handle(Socket sock, ToadletContainer container, PageMaker pageMaker) {
try {
InputStream is = new BufferedInputStream(sock.getInputStream(), 4096);
LineReadingInputStream lis = new LineReadingInputStream(is);
while(true) {
String firstLine = lis.readLine(32768, 128, false); // ISO-8859-1 or US-ASCII, _not_ UTF-8
if (firstLine == null) {
sock.close();
return;
} else if (firstLine.equals("")) {
continue;
}
boolean logMINOR = Logger.shouldLog(Logger.MINOR, ToadletContextImpl.class);
if(logMINOR)
Logger.minor(ToadletContextImpl.class, "first line: "+firstLine);
String[] split = firstLine.split(" ");
if(split.length != 3)
throw new ParseException("Could not parse request line (split.length="+split.length+"): "+firstLine);
if(!split[2].startsWith("HTTP/1."))
throw new ParseException("Unrecognized protocol "+split[2]);
URI uri;
try {
uri = URIPreEncoder.encodeURI(split[1]).normalize();
if(logMINOR) Logger.minor(ToadletContextImpl.class, "URI: "+uri+" path "+uri.getPath()+" host "+uri.getHost()+" frag "+uri.getFragment()+" port "+uri.getPort()+" query "+uri.getQuery()+" scheme "+uri.getScheme());
} catch (URISyntaxException e) {
sendURIParseError(sock.getOutputStream(), true, e);
return;
}
String method = split[0];
MultiValueTable headers = new MultiValueTable();
while(true) {
String line = lis.readLine(32768, 128, false); // ISO-8859 or US-ASCII, not UTF-8
if (line == null) {
sock.close();
return;
}
//System.out.println("Length="+line.length()+": "+line);
if(line.length() == 0) break;
int index = line.indexOf(':');
if (index < 0) {
throw new ParseException("Missing ':' in request header field");
}
String before = line.substring(0, index).toLowerCase();
String after = line.substring(index+1);
after = after.trim();
headers.put(before, after);
}
boolean disconnect = shouldDisconnectAfterHandled(split[2].equals("HTTP/1.0"), headers) || !container.enablePersistentConnections();
boolean allowPost = container.allowPosts();
BucketFactory bf = container.getBucketFactory();
ToadletContextImpl ctx = new ToadletContextImpl(sock, headers, bf, pageMaker, container);
ctx.shouldDisconnect = disconnect;
/*
* if we're handling a POST, copy the data into a bucket now,
* before we go into the redirect loop
*/
Bucket data;
if(method.equals("POST")) {
String slen = (String) headers.get("content-length");
if(slen == null) {
sendError(sock.getOutputStream(), 400, "Bad Request", l10n("noContentLengthInPOST"), true, null);
return;
}
long len;
try {
len = Integer.parseInt(slen);
if(len < 0) throw new NumberFormatException("content-length less than 0");
} catch (NumberFormatException e) {
sendError(sock.getOutputStream(), 400, "Bad Request", l10n("cannotParseContentLengthWithError", "error", e.toString()), true, null);
return;
}
if(allowPost) {
data = bf.makeBucket(len);
BucketTools.copyFrom(data, is, len);
} else {
FileUtil.skipFully(is, len);
ctx.sendMethodNotAllowed("POST", true);
ctx.close();
return;
}
} else {
// we're not doing to use it, but we have to keep
// the compiler happy
data = null;
}
// Handle it.
boolean redirect = true;
while (redirect) {
// don't go around the loop unless set explicitly
redirect = false;
Toadlet t;
try {
t = container.findToadlet(uri);
} catch (PermanentRedirectException e) {
Toadlet.writePermanentRedirect(ctx, "Found elsewhere", e.newuri.toASCIIString());
break;
}
if(t == null) {
ctx.sendNoToadletError(ctx.shouldDisconnect);
break;
}
HTTPRequestImpl req = new HTTPRequestImpl(uri, data, ctx);
try {
if(method.equals("GET")) {
t.handleGet(uri, req, ctx);
ctx.close();
} else if(method.equals("PUT")) {
t.handlePut(uri, ctx);
ctx.close();
} else if(method.equals("POST")) {
t.handlePost(uri, req, ctx);
} else {
ctx.sendMethodNotAllowed(method, ctx.shouldDisconnect);
ctx.close();
}
} catch (RedirectException re) {
uri = re.newuri;
redirect = true;
} finally {
req.freeParts();
}
}
if(ctx.shouldDisconnect) {
sock.close();
return;
}
}
} catch (ParseException e) {
try {
sendError(sock.getOutputStream(), 400, "Bad Request", l10n("parseErrorWithError", "error", e.getMessage()), true, null);
} catch (IOException e1) {
// Ignore
}
} catch (TooLongException e) {
try {
sendError(sock.getOutputStream(), 400, "Bad Request", l10n("headersLineTooLong"), true, null);
} catch (IOException e1) {
// Ignore
}
} catch (IOException e) {
return;
} catch (ToadletContextClosedException e) {
Logger.error(ToadletContextImpl.class, "ToadletContextClosedException while handling connection!");
return;
} catch (Throwable t) {
Logger.error(ToadletContextImpl.class, "Caught error: "+t+" handling socket", t);
}
}
/**
* Should the connection be closed after handling this request?
* @param isHTTP10 Did the client specify HTTP/1.0?
* @param headers Client headers.
* @return True if the connection should be closed.
*/
private static boolean shouldDisconnectAfterHandled(boolean isHTTP10, MultiValueTable headers) {
String connection = (String) headers.get("connection");
if(connection != null) {
if(connection.equalsIgnoreCase("close"))
return true;
if(connection.equalsIgnoreCase("keep-alive"))
return false;
}
if(isHTTP10 == true)
return true;
else
// HTTP 1.1
return false;
}
static class ParseException extends Exception {
private static final long serialVersionUID = -1;
ParseException(String string) {
super(string);
}
}
public void writeData(byte[] data, int offset, int length) throws ToadletContextClosedException, IOException {
if(closed) throw new ToadletContextClosedException();
sockOutputStream.write(data, offset, length);
}
public void writeData(byte[] data) throws ToadletContextClosedException, IOException {
writeData(data, 0, data.length);
}
public void writeData(Bucket data) throws ToadletContextClosedException, IOException {
if(closed) throw new ToadletContextClosedException();
BucketTools.copyTo(data, sockOutputStream, Long.MAX_VALUE);
}
public BucketFactory getBucketFactory() {
return bf;
}
public HTMLNode addFormChild(HTMLNode parentNode, String target, String name) {
return container.addFormChild(parentNode, target, name);
}
public boolean isAllowedFullAccess() {
return container.isAllowedFullAccess(remoteAddr);
}
public boolean doRobots() {
return container.doRobots();
}
public void forceDisconnect() {
this.shouldDisconnect = true;
}
public ToadletContainer getContainer() {
return container;
}
}
The table below shows all metrics for ToadletContextImpl.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 77.00 | Number of blocks | |
| BLOCK_COMMENT | 4.00 | Number of block comment lines | |
| COMMENTS | 53.00 | Comment lines | |
| COMMENT_DENSITY | 0.18 | Comment density | |
| COMPARISONS | 44.00 | Number of comparison operators | |
| CYCLOMATIC | 85.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 7.00 | Comments in declarations | |
| DOC_COMMENT | 38.00 | Number of javadoc comment lines | |
| ELOC | 300.00 | Effective lines of code | |
| EXEC_COMMENTS | 11.00 | Comments in executable code | |
| EXITS | 90.00 | Procedure exits | |
| FUNCTIONS | 28.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 70.71 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 124.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 1.00 | 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 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | 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 public 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 | 22.00 | 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 | 4.00 | 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 | 1.00 | 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 | 2.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 11.00 | 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 | 1.00 | 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 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 0.00 | 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 | 10.00 | 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 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 1.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 1.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 1.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 1.00 | 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 | 0.00 | 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 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 1.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 4.00 | 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 | 12.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 1217.00 | 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 | 1.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 1.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 1.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 6.00 | 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 | 0.00 | 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 | 0.00 | 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 | 1.00 | 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 | 1.00 | 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 | 0.00 | 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 | |
| LINES | 474.00 | Number of lines in the source file | |
| LINE_COMMENT | 11.00 | Number of line comments | |
| LOC | 358.00 | Lines of code | |
| LOGICAL_LINES | 214.00 | Number of statements | |
| LOOPS | 6.00 | Number of loops | |
| NEST_DEPTH | 6.00 | Maximum nesting depth | |
| OPERANDS | 1006.00 | Number of operands | |
| OPERATORS | 1790.00 | Number of operators | |
| PARAMS | 62.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 2796.00 | Halstead program length | |
| PROGRAM_VOCAB | 430.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 62.00 | Number of return points from functions | |
| SIZE | 15812.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 377.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 53.00 | Number of unique operators | |
| WHITESPACE | 63.00 | Number of whitespace lines | |