ClientCHKBlock.java
| Index Score | ||
|---|---|---|
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freenet.keys |
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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 | |
|---|---|---|
| JAVA0150 | JAVA0150 java.lang.Error (or subclass) thrown |  |
| JAVA0076 | JAVA0076 Use of magic number | |
| EXEC_COMMENTS | Comments in executable code | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0144 | JAVA0144 Line exceeds maximum M characters | |
| LINE_COMMENT | Number of line comments | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0068 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| UNIQUE_OPERATORS | Number of unique operators | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0174 | JAVA0174 Assigned local variable never used | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| CYCLOMATIC | Cyclomatic complexity | |
| COMPARISONS | Number of comparison operators | |
| WHITESPACE | Number of whitespace lines | |
| LOOPS | Number of loops | |
| FUNCTIONS | Number of function declarations | |
| LINES | Number of lines in the source file | |
| BLOCKS | Number of blocks | |
| COMMENTS | Comment lines | |
| LOC | Lines of code | |
| DOC_COMMENT | Number of javadoc comment lines | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/* This code is part of Freenet. It is distributed under the GNU General
* Public License, version 2 (or at your option any later version). See
* http://www.gnu.org/ for further details of the GPL. */
package freenet.keys;
import java.io.IOException;
import java.security.MessageDigest;
import java.util.Arrays;
import org.spaceroots.mantissa.random.MersenneTwister;
import freenet.crypt.BlockCipher;
import freenet.crypt.PCFBMode;
import freenet.crypt.SHA256;
import freenet.crypt.UnsupportedCipherException;
import freenet.crypt.ciphers.Rijndael;
import freenet.keys.Key.Compressed;
import freenet.node.Node;
import freenet.support.api.Bucket;
import freenet.support.api.BucketFactory;
import freenet.support.io.ArrayBucket;
import freenet.support.io.ArrayBucketFactory;
import freenet.support.io.BucketTools;
/**
* @author amphibian
*
* Client CHKBlock - provides functions for decoding, holds a client-key.
*/
public class ClientCHKBlock extends CHKBlock implements ClientKeyBlock {
final ClientCHK key;
public String toString() {
return super.toString()+",key="+key;
}
/**
* Construct from data retrieved, and a key.
* Do not do full decode. Verify what can be verified without doing
* a full decode.
* @param key2 The client key.
* @param header The header.
* @param data The data.
*/
public ClientCHKBlock(byte[] data, byte[] header, ClientCHK key2, boolean verify) throws CHKVerifyException {
super(data, header, key2.getNodeCHK(), verify, key2.cryptoAlgorithm);
this.key = key2;
}
/**
* Construct from a CHKBlock and a key.
*/
public ClientCHKBlock(CHKBlock block, ClientCHK key2) throws CHKVerifyException {
this(block.getData(), block.getHeaders(), key2, true);
}
/**
* Decode into RAM, if short.
* @throws CHKDecodeException
*/
public byte[] memoryDecode() throws CHKDecodeException {
try {
ArrayBucket a = (ArrayBucket) decode(new ArrayBucketFactory(), 32*1024, false);
return BucketTools.toByteArray(a); // FIXME
} catch (IOException e) {
throw new Error(e);
}
}
/**
* Decode the CHK and recover the original data
* @return the original data
* @throws IOException If there is a bucket error.
*/
public Bucket decode(BucketFactory bf, int maxLength, boolean dontCompress) throws CHKDecodeException, IOException {
// Overall hash already verified, so first job is to decrypt.
if(key.cryptoAlgorithm != Key.ALGO_AES_PCFB_256_SHA256)
throw new UnsupportedOperationException();
BlockCipher cipher;
try {
cipher = new Rijndael(256, 256);
} catch (UnsupportedCipherException e) {
// FIXME - log this properly
throw new Error(e);
}
byte[] cryptoKey = key.cryptoKey;
if(cryptoKey.length < Node.SYMMETRIC_KEY_LENGTH)
throw new CHKDecodeException("Crypto key too short");
cipher.initialize(key.cryptoKey);
PCFBMode pcfb = PCFBMode.create(cipher);
byte[] hbuf = new byte[headers.length-2];
System.arraycopy(headers, 2, hbuf, 0, headers.length-2);
byte[] dbuf = new byte[data.length];
System.arraycopy(data, 0, dbuf, 0, data.length);
// Decipher header first - functions as IV
pcfb.blockDecipher(hbuf, 0, hbuf.length);
pcfb.blockDecipher(dbuf, 0, dbuf.length);
// Check: Decryption key == hash of data (not including header)
MessageDigest md256 = SHA256.getMessageDigest();
byte[] dkey = md256.digest(dbuf);
if(!java.util.Arrays.equals(dkey, key.cryptoKey)) {
SHA256.returnMessageDigest(md256);
throw new CHKDecodeException("Check failed: decrypt key == H(data)");
}
// Check: IV == hash of decryption key
byte[] predIV = md256.digest(dkey);
SHA256.returnMessageDigest(md256); md256 = null;
// Extract the IV
byte[] iv = new byte[32];
System.arraycopy(hbuf, 0, iv, 0, 32);
if(!Arrays.equals(iv, predIV))
throw new CHKDecodeException("Check failed: Decrypted IV == H(decryption key)");
// Checks complete
int size = ((hbuf[32] & 0xff) << 8) + (hbuf[33] & 0xff);
if((size > 32768) || (size < 0)) {
throw new CHKDecodeException("Invalid size: "+size);
}
return Key.decompress(dontCompress ? false : key.isCompressed(), dbuf, size, bf,
Math.min(maxLength, MAX_LENGTH_BEFORE_COMPRESSION), key.compressionAlgorithm, false);
}
/**
* Encode a Bucket of data to a CHKBlock.
* @param sourceData The bucket of data to encode. Can be arbitrarily large.
* @param asMetadata Is this a metadata key?
* @param dontCompress If set, don't even try to compress.
* @param alreadyCompressedCodec If !dontCompress, and this is >=0, then the
* data is already compressed, and this is the algorithm.
* @throws CHKEncodeException
* @throws IOException If there is an error reading from the Bucket.
*/
static public ClientCHKBlock encode(Bucket sourceData, boolean asMetadata, boolean dontCompress, short alreadyCompressedCodec, long sourceLength) throws CHKEncodeException, IOException {
byte[] finalData = null;
byte[] data;
byte[] header;
ClientCHK key;
short compressionAlgorithm = -1;
try {
Compressed comp = Key.compress(sourceData, dontCompress, alreadyCompressedCodec, sourceLength, MAX_LENGTH_BEFORE_COMPRESSION, CHKBlock.DATA_LENGTH, false);
finalData = comp.compressedData;
compressionAlgorithm = comp.compressionAlgorithm;
} catch (KeyEncodeException e2) {
throw new CHKEncodeException(e2.getMessage(), e2);
}
// Now do the actual encode
MessageDigest md256 = SHA256.getMessageDigest();
// First pad it
if(finalData.length != 32768) {
// Hash the data
if(finalData.length != 0)
md256.update(finalData);
byte[] digest = md256.digest();
MersenneTwister mt = new MersenneTwister(digest);
data = new byte[32768];
System.arraycopy(finalData, 0, data, 0, finalData.length);
byte[] randomBytes = new byte[32768-finalData.length];
mt.nextBytes(randomBytes);
System.arraycopy(randomBytes, 0, data, finalData.length, 32768-finalData.length);
} else {
data = finalData;
}
// Now make the header
byte[] encKey = md256.digest(data);
md256.reset();
// IV = E(H(crypto key))
byte[] plainIV = md256.digest(encKey);
header = new byte[plainIV.length+2+2];
header[0] = (byte)(KeyBlock.HASH_SHA256 >> 8);
header[1] = (byte)(KeyBlock.HASH_SHA256 & 0xff);
System.arraycopy(plainIV, 0, header, 2, plainIV.length);
header[plainIV.length+2] = (byte)(finalData.length >> 8);
header[plainIV.length+3] = (byte)(finalData.length & 0xff);
// GRRR, java 1.4 does not have any symmetric crypto
// despite exposing asymmetric and hashes!
// Now encrypt the header, then the data, using the same PCFB instance
BlockCipher cipher;
try {
cipher = new Rijndael(256, 256);
} catch (UnsupportedCipherException e) {
// FIXME - log this properly
throw new Error(e);
}
cipher.initialize(encKey);
PCFBMode pcfb = PCFBMode.create(cipher);
pcfb.blockEncipher(header, 2, header.length-2);
pcfb.blockEncipher(data, 0, data.length);
// Now calculate the final hash
md256.update(header);
byte[] finalHash = md256.digest(data);
SHA256.returnMessageDigest(md256);
// Now convert it into a ClientCHK
key = new ClientCHK(finalHash, encKey, asMetadata, Key.ALGO_AES_PCFB_256_SHA256, compressionAlgorithm);
try {
return new ClientCHKBlock(data, header, key, false);
} catch (CHKVerifyException e3) {
//WTF?
throw new Error(e3);
}
}
/**
* Encode a block of data to a CHKBlock.
* @param sourceData The data to encode.
* @param asMetadata Is this a metadata key?
* @param dontCompress If set, don't even try to compress.
* @param alreadyCompressedCodec If !dontCompress, and this is >=0, then the
* data is already compressed, and this is the algorithm.
*/
static public ClientCHKBlock encode(byte[] sourceData, boolean asMetadata, boolean dontCompress, short alreadyCompressedCodec, int sourceLength) throws CHKEncodeException {
try {
return encode(new ArrayBucket(sourceData), asMetadata, dontCompress, alreadyCompressedCodec, sourceLength);
} catch (IOException e) {
// Can't happen
throw new Error(e);
}
}
public ClientKey getClientKey() {
return key;
}
public boolean isMetadata() {
return key.isMetadata();
}
}
The table below shows all metrics for ClientCHKBlock.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 25.00 | Number of blocks | |
| BLOCK_COMMENT | 3.00 | Number of block comment lines | |
| COMMENTS | 66.00 | Comment lines | |
| COMMENT_DENSITY | 0.52 | Comment density | |
| COMPARISONS | 9.00 | Number of comparison operators | |
| CYCLOMATIC | 24.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 8.00 | Comments in declarations | |
| DOC_COMMENT | 43.00 | Number of javadoc comment lines | |
| ELOC | 127.00 | Effective lines of code | |
| EXEC_COMMENTS | 19.00 | Comments in executable code | |
| EXITS | 25.00 | Procedure exits | |
| FUNCTIONS | 9.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 72.44 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 43.00 | 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 | 4.00 | 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 | 0.00 | 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 | 2.00 | 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 | 20.00 | 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 | 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 | 5.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 3.00 | 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 | 4.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 0.00 | 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 | 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 | 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 | 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 | 3.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 62.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 5.00 | 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 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 0.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 1.00 | 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 | 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 | 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 | 0.00 | 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 | 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 | 234.00 | Number of lines in the source file | |
| LINE_COMMENT | 20.00 | Number of line comments | |
| LOC | 146.00 | Lines of code | |
| LOGICAL_LINES | 97.00 | Number of statements | |
| LOOPS | 0.00 | Number of loops | |
| NEST_DEPTH | 2.00 | Maximum nesting depth | |
| OPERANDS | 479.00 | Number of operands | |
| OPERATORS | 840.00 | Number of operators | |
| PARAMS | 19.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 1319.00 | Halstead program length | |
| PROGRAM_VOCAB | 211.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 24.00 | Number of return points from functions | |
| SIZE | 9091.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 162.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 49.00 | Number of unique operators | |
| WHITESPACE | 22.00 | Number of whitespace lines | |