PushEndpoint.java
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com.limegroup.gnutella |
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FrostWire |
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 |  |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| COMPARISONS | Number of comparison operators | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0020 | JAVA0020 Field name does not have required form | |
| DECL_COMMENTS | Comments in declarations | |
| DOC_COMMENT | Number of javadoc comment lines | |
| SIZE | Size of the file in bytes | |
| JAVA0116 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| EXITS | Procedure exits | |
| EXEC_COMMENTS | Comments in executable code | |
| JAVA0143 | JAVA0143 Synchronized method | |
| JAVA0076 | JAVA0076 Use of magic number | |
| JAVA0084 | JAVA0084 Should use compound assignment operator | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0259 | JAVA0259 Return of collection/array field | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| UNIQUE_OPERANDS | Number of unique operands | |
| JAVA0138 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| LINE_COMMENT | Number of line comments | |
| CYCLOMATIC | Cyclomatic complexity | |
| COMMENTS | Comment lines | |
| OPERATORS | Number of operators | |
| LOGICAL_LINES | Number of statements | |
| LOOPS | Number of loops | |
| PROGRAM_LENGTH | Halstead program length | |
| LINES | Number of lines in the source file | |
package com.limegroup.gnutella;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.Collections;
import java.util.Set;
import org.limewire.collection.BitNumbers;
import org.limewire.io.Connectable;
import org.limewire.io.ConnectableImpl;
import org.limewire.io.IpPort;
import org.limewire.io.IpPortSet;
import org.limewire.io.NetworkInstanceUtils;
import org.limewire.io.NetworkUtils;
import org.limewire.util.ByteOrder;
import com.limegroup.gnutella.PushEndpointCache.CachedPushEndpoint;
import com.limegroup.gnutella.http.HTTPConstants;
import com.limegroup.gnutella.http.HTTPHeaderValue;
import com.limegroup.gnutella.uploader.HTTPHeaderUtils;
/**
* a class that represents an endpoint behind one or more PushProxies.
* almost everything is immutable including the contents of the set.
*
* the network format this is serialized to is:
* byte 0 (from right-to-left):
* - bits 0-2 how many push proxies we have (so max is 7)
* - bits 3-4 the version of the f2f transfer protocol this altloc supports
* - bits 5-6 other possible features.
* - bit 7 set if the TLS-capable push proxy indexes byte is included
* bytes 1-16 : the guid
* bytes 17-22: ip:port of the address (if FWT version > 0)
* followed by a byte of TLS-capable PushProxy indexes (if bit 7 of features is set)
* followed by 6 bytes per PushProxy
*
* the http format this is serialized to is an ascii string consisting of
* ';'-delimited tokens. The first token is the client GUID represented in hex
* and is the only required token. The other tokens can be addresses of push proxies
* or various feature headers. At most one of the tokens should be the external ip and port
* of the firewalled node in a port:ip format. Currently the only feature header we
* parse is the fwawt header that contains the version number of the firewall to
* firewall transfer protocol supported by the altloc. In addition, the 'pptls=' field
* can indicate which, if any, push proxies support TLS. If the field is present, it
* must be immediately before the listing of the push proxies. The hexadecimal string
* after the '=' is a bit-representation of which push proxies are valid for TLS.
*
* A PE does not need to know the actual external address of the firewalled host,
* however without that knowledge we cannot do firewall-to-firewall transfer with
* the given host. Also, the RemoteFileDesc objects requires a valid IP for construction,
* so in the case we do not know the external address we return a BOGUS_IP.
*
* Examples:
*
* //altloc with 2 proxies and supports firewall transfer 1 :
*
* <ThisIsTheGUIDASDF>;fwt/1.0;20.30.40.50:60;1.2.3.4:5567
*
* //altloc with 1 proxy and doesn't support firewall transfer, with external address:
*
* <ThisIsTHeGUIDasfdaa527>;1.2.3.4:5564;6346:2.3.4.5
*
* //altloc with 1 proxy and supports two features we don't know/care about :
*
* <ThisIsTHeGUIDasfdaa527>;someFeature/3.2;10.20.30.40:5564;otherFeature/0.4
*
* //altloc with 1 proxy (the first) that's TLS capable, 1 that isn't:
*
* <ThisIsTheGUIDASDF>;fwt/1.0;pptls=8;20.30.40.50:60;1.2.3.4:5567
*
* //altloc without any proxies and doesn't support any features
* // not very useful, but still valid
*
* <ThisIsTheGUIDasdf23457>
*/
public class PushEndpoint implements HTTPHeaderValue, IpPort {
public static final int HEADER_SIZE=17; //guid+# of proxies, maybe other things too
public static final int PROXY_SIZE=6; //ip:port
public static final byte PLAIN=0x0; //no features for this PE
public static final byte PPTLS_BINARY = (byte)0x80;
static final byte SIZE_MASK=0x7; //0000 0111
static final byte FWT_VERSION_MASK=0x18; //0001 1000
//the features mask does not clear the bits we do not understand
//because we may pass on the altloc to someone who does.
static final byte FEATURES_MASK= (byte)0xE0; //1110 0000
/** The pptls portion constant. */
public static final String PPTLS_HTTP = "pptls";
/** The maximum number of proxies to use. */
public static final int MAX_PROXIES = 4;
/**
* the client guid of the endpoint
*/
private final byte [] _clientGUID;
/**
* the guid as an object to avoid recreating
* If there are other PushEnpoint objects, they all will ultimately
* point to the same GUID object. This ensures that as long as
* there is at least one PE object for a remote host, the set of
* proxies will not be gc-ed.
*/
private GUID _guid;
/**
* the various features this PE supports.
*/
private final int _features;
/**
* the version of firewall to firewall transfer protocol
* this endpoint supports.
*/
private final int _fwtVersion;
/**
* the set of proxies this has immediately after creating the endpoint
* cleared after registering in the map. This is used only to
* hold the parsed proxies until they are put in the map.
*/
private Set<? extends IpPort> _proxies;
/**
* the external address of this PE. Needed for firewall-to-firewall
* transfers, but can be null.
*/
private final IpPort _externalAddr;
private final PushEndpointCache pushEndpointCache;
private final NetworkInstanceUtils networkInstanceUtils;
public PushEndpoint(byte[] guid, Set<? extends IpPort> proxies, byte features, int version,
IpPort addr, PushEndpointCache pushEndpointCache,
NetworkInstanceUtils networkInstanceUtils) {
this.pushEndpointCache = pushEndpointCache;
this.networkInstanceUtils = networkInstanceUtils;
_features = ((features & FEATURES_MASK) | (version << 3));
_fwtVersion=version;
_clientGUID=guid;
_guid = new GUID(_clientGUID);
if (proxies != null) {
if (proxies instanceof IpPortSet)
_proxies = Collections.unmodifiableSet(proxies);
else
_proxies = Collections.unmodifiableSet(new IpPortSet(proxies));
} else
_proxies = Collections.emptySet();
_externalAddr = addr;
}
/**
* @return a byte-packed representation of this
*/
public byte [] toBytes(boolean includeTLS) {
Set<? extends IpPort> proxies = getProxies();
int payloadSize = getSizeBytes(proxies, includeTLS);
IpPort addr = getValidExternalAddress();
int FWTVersion = supportsFWTVersion();
if (addr != null && FWTVersion > 0)
payloadSize+=6;
byte [] ret = new byte[payloadSize];
toBytes(ret,0,proxies,addr,FWTVersion, includeTLS);
return ret;
}
/**
* creates a byte packet representation of this
* @param where the byte [] to serialize to
* @param offset the offset within that byte [] to serialize
*/
public void toBytes(byte [] where, int offset, boolean includeTLS) {
toBytes(where, offset, getProxies(), getValidExternalAddress(),supportsFWTVersion(), includeTLS);
}
private void toBytes(byte []where, int offset, Set<? extends IpPort> proxies,
IpPort address, int FWTVersion, boolean includeTLS) {
int neededSpace = getSizeBytes(proxies, includeTLS);
if (address != null) {
if (FWTVersion > 0)
neededSpace+=6;
} else {
FWTVersion = 0;
}
if (where.length-offset < neededSpace)
throw new IllegalArgumentException ("target array too small");
int featureIdx = offset;
//store the number of proxies
where[offset] = (byte)(Math.min(MAX_PROXIES,proxies.size())
| getFeatures()
| FWTVersion << 3);
//store the guid
System.arraycopy(_clientGUID,0,where,++offset,16);
offset+=16;
//if we know the external address, store that too
//if its valid and not private and port is valid
if (address != null && FWTVersion > 0) {
byte [] addr = address.getInetAddress().getAddress();
int port = address.getPort();
System.arraycopy(addr,0,where,offset,4);
offset+=4;
ByteOrder.short2leb((short)port,where,offset);
offset+=2;
}
// If we're including TLS, then add a byte for which proxies support it.
int pptlsIdx = offset;
int i=0;
if(includeTLS) {
// If any of the proxies are TLS-capable, increment the offset
for(IpPort ppi : proxies) {
if(i >= MAX_PROXIES)
break;
if(ppi instanceof Connectable && ((Connectable)ppi).isTLSCapable()) {
offset++;
break;
}
i++;
}
}
//store the push proxies
i=0;
for(IpPort ppi : proxies) {
if(i >= MAX_PROXIES)
break;
byte [] addr = ppi.getInetAddress().getAddress();
short port = (short)ppi.getPort();
System.arraycopy(addr,0,where,offset,4);
offset+=4;
ByteOrder.short2leb(port,where,offset);
offset+=2;
i++;
}
// insert the tls indices & turn the feature on if TLS should be included
BitNumbers bn = includeTLS ? HTTPHeaderUtils.getTLSIndices(proxies, (Math.min(proxies.size(), MAX_PROXIES))) : BitNumbers.EMPTY_BN;
if(!bn.isEmpty()) {
byte[] tlsIndexes = bn.toByteArray();
assert tlsIndexes.length == 1;
where[pptlsIdx] = tlsIndexes[0];
where[featureIdx] |= PPTLS_BINARY;
} else {
where[featureIdx] &= ~PPTLS_BINARY; // make sure its not in the features!
}
}
/**
*
* @return an IpPort representing our valid external
* address, or null if we don't have such.
*/
protected IpPort getValidExternalAddress() {
IpPort ret = getIpPort();
if (ret == null || !networkInstanceUtils.isValidExternalIpPort(ret))
return null;
assert !ret.getAddress().equals(RemoteFileDesc.BOGUS_IP) :
"bogus ip address leaked, field is "+_externalAddr+
" cache contains "+pushEndpointCache.getCached(_guid);
return ret;
}
/**
* Returns the GUID of the client that can be reached through the pushproxies.
*/
public byte [] getClientGUID() {
return _clientGUID;
}
/**
*
* @return a view of the current set of proxies.
*/
public Set<? extends IpPort> getProxies() {
synchronized(this) {
if (_proxies!=null)
return _proxies;
}
CachedPushEndpoint current = pushEndpointCache.getCached(_guid);
if (current == null)
return Collections.emptySet();
return current.getProxies();
}
/**
* @param the set of proxies for this PE
* @return how many bytes a PE will use when serialized.
*/
public static int getSizeBytes(Set<? extends IpPort> proxies, boolean includeTLS) {
boolean hasTLS = false;
if(includeTLS) {
int i = 0;
for(IpPort ipp : proxies) {
if(i >= MAX_PROXIES)
break;
if(ipp instanceof ConnectableImpl && ((Connectable)ipp).isTLSCapable()) {
hasTLS = true;
break;
}
i++;
}
}
return HEADER_SIZE + (hasTLS ? 1 : 0 ) + Math.min(proxies.size(),MAX_PROXIES) * PROXY_SIZE;
}
/**
* @return which version of F2F transfers this PE supports.
* This always returns the most current version we know the PE supports
* unless it has never been put in the map.
*/
public int supportsFWTVersion() {
CachedPushEndpoint current = pushEndpointCache.getCached(_guid);
int currentVersion = current == null ?
_fwtVersion : current.getFWTVersion();
return currentVersion;
}
public int hashCode() {
return _guid.hashCode();
}
public boolean equals(Object other) {
//this method ignores the version of firewall-to-firewall
//transfers supported, the features and the sets of proxies
if (other == null)
return false;
if (!(other instanceof PushEndpoint))
return false;
PushEndpoint o = (PushEndpoint)other;
//same guid
return _guid.equals(o._guid);
}
public String toString() {
String ret = "PE [FEATURES:"+getFeatures()+", FWT Version:"+supportsFWTVersion()+
", GUID:"+_guid+", address: "+
getAddress()+":"+getPort()+", proxies:{ ";
for(IpPort ppi : getProxies()) {
ret = ret+ppi.getInetAddress()+":"+ppi.getPort()+" ";
}
ret = ret+ "}]";
return ret;
}
public String httpStringValue() {
StringBuilder httpString =new StringBuilder(_guid.toHexString()).append(";");
//if version is not 0, append it to the http string
int fwtVersion=supportsFWTVersion();
if (fwtVersion!=0) {
httpString.append(HTTPConstants.FW_TRANSFER)
.append("/")
.append(fwtVersion)
.append(";");
// append the external address of this endpoint if such exists
// and is valid, non-private and if the port is valid as well.
IpPort address = getValidExternalAddress();
if (address!=null) {
String addr = getAddress();
int port = getPort();
if (!addr.equals(RemoteFileDesc.BOGUS_IP) &&
NetworkUtils.isValidPort(port)){
httpString.append(port)
.append(":")
.append(addr)
.append(";");
}
}
}
Set<? extends IpPort> proxies = getProxies();
if (!proxies.isEmpty()) {
httpString.append(HTTPHeaderUtils.encodePushProxies(proxies, ";", PushEndpoint.MAX_PROXIES));
} else {
//trim the ; at the end
httpString.deleteCharAt(httpString.length()-1);
}
return httpString.toString();
}
/**
* @return the various features this PE reports. This always
* returns the most current features, or the ones it was created with
* if they have never been updated.
*/
public byte getFeatures() {
CachedPushEndpoint current = pushEndpointCache.getCached(_guid);
int currentFeatures = current==null ? _features : current.getFeatures();
return (byte)(currentFeatures & FEATURES_MASK);
}
private IpPort getIpPort() {
CachedPushEndpoint current = pushEndpointCache.getCached(_guid);
return current == null || current.getIpPort() == null ?
_externalAddr : current.getIpPort();
}
/**
* Implements the IpPort interface, returning a bogus ip if we don't know
* it.
*/
public String getAddress() {
IpPort addr = getIpPort();
return addr != null ? addr.getAddress() : RemoteFileDesc.BOGUS_IP;
}
public InetAddress getInetAddress() {
IpPort addr = getIpPort();
return addr != null ? addr.getInetAddress() : null;
}
/**
* Implements the IpPort interface, returning a bogus port if we don't know it
*/
public int getPort() {
IpPort addr = getIpPort();
return addr != null ? addr.getPort() : 6346;
}
public InetSocketAddress getInetSocketAddress() {
IpPort addr = getIpPort();
return addr != null ? addr.getInetSocketAddress() : null;
}
public boolean isLocal() {
return false;
}
/**
* Updates either the PushEndpoint or the GUID_PROXY_MAP to ensure
* that GUID_PROXY_MAP has a reference to all live PE GUIDs and
* all live PE's reference the same GUID object as in GUID_PROXY_MAP.
*
* If this method is not called, the PE will know only about the set
* of proxies the remote host had when it was created. Otherwise it
* will point to the most recent known set.
*/
public synchronized void updateProxies(boolean good) {
_guid = pushEndpointCache.updateProxiesFor(_guid, this, good);
_proxies = null;
}
public PushEndpoint createClone() {
return new PushEndpoint(_guid.bytes(), getProxies(), getFeatures(), supportsFWTVersion(),
getIpPort(), pushEndpointCache, networkInstanceUtils);
}
}
The table below shows all metrics for PushEndpoint.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 42.00 | Number of blocks | |
| BLOCK_COMMENT | 0.00 | Number of block comment lines | |
| COMMENTS | 149.00 | Comment lines | |
| COMMENT_DENSITY | 0.68 | Comment density | |
| COMPARISONS | 52.00 | Number of comparison operators | |
| CYCLOMATIC | 62.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 21.00 | Comments in declarations | |
| DOC_COMMENT | 132.00 | Number of javadoc comment lines | |
| ELOC | 220.00 | Effective lines of code | |
| EXEC_COMMENTS | 12.00 | Comments in executable code | |
| EXITS | 47.00 | Procedure exits | |
| FUNCTIONS | 22.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 88.57 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 49.00 | 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 | 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 | 2.00 | 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 | 14.00 | 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 | 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 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 4.00 | 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 | 2.00 | 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 | 1.00 | 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 | 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 | 4.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 3.00 | 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 | 1.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 2.00 | 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 | 1.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 1.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 388.00 | 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 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 0.00 | 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 | 0.00 | 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 | 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 | 2.00 | 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 | 481.00 | Number of lines in the source file | |
| LINE_COMMENT | 17.00 | Number of line comments | |
| LOC | 259.00 | Lines of code | |
| LOGICAL_LINES | 144.00 | Number of statements | |
| LOOPS | 0.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 620.00 | Number of operands | |
| OPERATORS | 1238.00 | Number of operators | |
| PARAMS | 21.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 1858.00 | Halstead program length | |
| PROGRAM_VOCAB | 270.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 28.00 | Number of return points from functions | |
| SIZE | 15987.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 210.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 60.00 | Number of unique operators | |
| WHITESPACE | 73.00 | Number of whitespace lines | |