eclipse的java编译器命令行
汗，刚刚突然发现我的javac是eclipse的java编译器。留念下。
stlxv@stlxvcomputer:~$ javac -version
Eclipse Java Compiler v_686_R32x, 3.2.2 release, Copyright IBM Corp 2000, 2006.
这东西原名叫ecj，不过我也不知道是哪里冒出来的。算了，这个东西编译速度挺快的，我觉得。
stlxv@stlxvcomputer:~$ update-alternatives --display javac
javac - status is auto.
link currently points to /usr/bin/ecj
/usr/lib/jvm/java-6-sun/bin/javac - priority 63
slave javac.1.gz: /usr/lib/jvm/java-6-sun/man/man1/javac.1.gz
/usr/bin/ecj - priority 143
slave javac.1.gz: /usr/share/man/man1/ecj.1.gz
Current `best' version is /usr/bin/ecj.
可编译1.3~1.6的代码。
stlxv@stlxvcomputer:~$ javac
Eclipse Java Compiler v_686_R32x, 3.2.2 release
Copyright IBM Corp 2000, 2006. All rights reserved.
Usage: <options> <source files | directories>
If directories are specified, then their source contents are compiled.
Possible options are listed below. Options enabled by default are prefixed
with '+'.
Classpath options:
-cp -classpath <directories and zip/jar files separated by :>
specify location for application classes and sources.
Each directory or file can specify access rules for
types between '[' and ']' (e.g. [-X] to forbid
access to type X, [~X] to discourage access to type X,
[+p/X:-p/*] to forbid access to all types in package p
but allow access to p/X)
-bootclasspath <directories and zip/jar files separated by :>
specify location for system classes. Each directory or
file can specify access rules for types between '['
and ']'
-sourcepath <directories and zip/jar files separated by :>
specify location for application sources. Each directory
or file can specify access rules for types between '['
and ']'.
.class files created from source files contained in a
jar file are put in the user.dir folder in case no
destination directory is specified.
-extdirs <directories separated by :>
specify location for extension zip/jar files
-endorseddirs <directories separated by :>
specify location for endorsed zip/jar files
-d <dir> destination directory (if omitted, no directory is
created)
-d none generate no .class files
-encoding <enc> specify custom encoding for all sources. Each
file/directory can override it when suffixed with
'['<enc>']' (e.g. X.java[utf8])
Compliance options:
-1.3 use 1.3 compliance level (implicit -source 1.3
-target 1.1)
-1.4 + use 1.4 compliance level (implicit -source 1.3
-target 1.2)
-1.5 use 1.5 compliance level (implicit -source 1.5
-target 1.5)
-1.6 use 1.6 compliance level (implicit -source 1.6
-target 1.6)
-source <version> set source level: 1.3 to 1.6 (or 5, 5.0, 6 or 6.0)
-target <version> set classfile target level: 1.1 to 1.6 (or 5, 5.0, 6 or
6.0)
Warning options:
-deprecation + deprecation outside deprecated code
-nowarn disable all warnings
-warn:none disable all warnings
-warn:<warnings separated by ,> enable exactly the listed warnings
-warn:+<warnings separated by ,> enable additional warnings
-warn:-<warnings separated by ,> disable specific warnings
allDeprecation deprecation including inside deprecated code
allJavadoc invalid or missing javadoc
assertIdentifier + 'assert' used as identifier
boxing autoboxing conversion
charConcat + char[] in String concat
conditionAssign possible accidental boolean assignment
constructorName + method with constructor name
dep-ann missing @Deprecated annotation
deprecation + deprecation outside deprecated code
discouraged + use of types matching a discouraged access rule
emptyBlock undocumented empty block
enumSwitch incomplete enum switch
fallthrough possible fall-through case
fieldHiding field hiding another variable
finalBound type parameter with final bound
finally + finally block not completing normally
forbidden + use of types matching a forbidden access rule
hiding macro for fieldHiding, localHiding, typeHiding and
maskedCatchBlock
incomplete-switch same as enumSwitch
indirectStatic indirect reference to static member
intfAnnotation + annotation type used as super interface
intfNonInherited + interface non-inherited method compatibility
javadoc invalid javadoc
localHiding local variable hiding another variable
maskedCatchBlock + hidden catch block
nls string literal lacking non-nls tag //$NON-NLS-<n>$
noEffectAssign + assignment without effect
null missing or redundant null check
over-ann missing @Override annotation
paramAssign assignment to a parameter
pkgDefaultMethod + attempt to override package-default method
raw usage of raw type
semicolon unnecessary semicolon, empty statement
serial + missing serialVersionUID
specialParamHiding constructor or setter parameter hiding another field
static-access macro for indirectStatic and staticReceiver
staticReceiver + non-static reference to static member
suppress + enable @SuppressWarnings
synthetic-access same as syntheticAccess
syntheticAccess synthetic access for innerclass
tasks(<tags separated by |>) tasks identified by tags inside comments
typeHiding + type parameter hiding another type
unchecked + unchecked type operation
unnecessaryElse unnecessary else clause
unqualified-field-access same as unqualifiedField
unqualifiedField unqualified reference to field
unused macro for unusedArgument, unusedImport, unusedLabel,
unusedLocal, unusedPrivate and unusedThrown
unusedArgument unread method parameter
unusedImport + unused import declaration
unusedLabel + unused label
unusedLocal + unread local variable
unusedPrivate + unused private member declaration
unusedThrown unused declared thrown exception
uselessTypeCheck unnecessary cast/instanceof operation
varargsCast + varargs argument need explicit cast
warningToken + unhandled warning token in @SuppressWarnings
Debug options:
-g[:lines,vars,source] custom debug info
-g:lines,source + both lines table and source debug info
-g all debug info
-g:none no debug info
-preserveAllLocals preserve unused local vars for debug purpose
Ignored options:
-J<option> pass option to virtual machine (ignored)
-X<option> specify non-standard option (ignored)
-X print non-standard options and exit (ignored)
-O optimize for execution time (ignored)
Advanced options:
@<file> read command line arguments from file
-maxProblems <n> max number of problems per compilation unit (100 by
default)
-log <file> log to a file. If the file extension is '.xml', then
the log will be a xml file.
-proceedOnError do not stop at first error, dumping class files with
problem methods
-verbose enable verbose output
-referenceInfo compute reference info
-progress show progress (only in -log mode)
-time display speed information
-noExit do not call System.exit(n) at end of compilation (n==0
if no error)
-repeat <n> repeat compilation process <n> times for perf analysis
-inlineJSR inline JSR bytecode (implicit if target >= 1.5)
-enableJavadoc consider references in javadoc
-Xemacs used to enable emacs-style output
-? -help print this help message
-v -version print compiler version
-showversion print compiler version and continue
stlxv@stlxvcomputer:~$ javac -version
Eclipse Java Compiler v_686_R32x, 3.2.2 release, Copyright IBM Corp 2000, 2006.
这东西原名叫ecj，不过我也不知道是哪里冒出来的。算了，这个东西编译速度挺快的，我觉得。
stlxv@stlxvcomputer:~$ update-alternatives --display javac
javac - status is auto.
link currently points to /usr/bin/ecj
/usr/lib/jvm/java-6-sun/bin/javac - priority 63
slave javac.1.gz: /usr/lib/jvm/java-6-sun/man/man1/javac.1.gz
/usr/bin/ecj - priority 143
slave javac.1.gz: /usr/share/man/man1/ecj.1.gz
Current `best' version is /usr/bin/ecj.
可编译1.3~1.6的代码。
stlxv@stlxvcomputer:~$ javac
Eclipse Java Compiler v_686_R32x, 3.2.2 release
Copyright IBM Corp 2000, 2006. All rights reserved.
Usage: <options> <source files | directories>
If directories are specified, then their source contents are compiled.
Possible options are listed below. Options enabled by default are prefixed
with '+'.
Classpath options:
-cp -classpath <directories and zip/jar files separated by :>
specify location for application classes and sources.
Each directory or file can specify access rules for
types between '[' and ']' (e.g. [-X] to forbid
access to type X, [~X] to discourage access to type X,
[+p/X:-p/*] to forbid access to all types in package p
but allow access to p/X)
-bootclasspath <directories and zip/jar files separated by :>
specify location for system classes. Each directory or
file can specify access rules for types between '['
and ']'
-sourcepath <directories and zip/jar files separated by :>
specify location for application sources. Each directory
or file can specify access rules for types between '['
and ']'.
.class files created from source files contained in a
jar file are put in the user.dir folder in case no
destination directory is specified.
-extdirs <directories separated by :>
specify location for extension zip/jar files
-endorseddirs <directories separated by :>
specify location for endorsed zip/jar files
-d <dir> destination directory (if omitted, no directory is
created)
-d none generate no .class files
-encoding <enc> specify custom encoding for all sources. Each
file/directory can override it when suffixed with
'['<enc>']' (e.g. X.java[utf8])
Compliance options:
-1.3 use 1.3 compliance level (implicit -source 1.3
-target 1.1)
-1.4 + use 1.4 compliance level (implicit -source 1.3
-target 1.2)
-1.5 use 1.5 compliance level (implicit -source 1.5
-target 1.5)
-1.6 use 1.6 compliance level (implicit -source 1.6
-target 1.6)
-source <version> set source level: 1.3 to 1.6 (or 5, 5.0, 6 or 6.0)
-target <version> set classfile target level: 1.1 to 1.6 (or 5, 5.0, 6 or
6.0)
Warning options:
-deprecation + deprecation outside deprecated code
-nowarn disable all warnings
-warn:none disable all warnings
-warn:<warnings separated by ,> enable exactly the listed warnings
-warn:+<warnings separated by ,> enable additional warnings
-warn:-<warnings separated by ,> disable specific warnings
allDeprecation deprecation including inside deprecated code
allJavadoc invalid or missing javadoc
assertIdentifier + 'assert' used as identifier
boxing autoboxing conversion
charConcat + char[] in String concat
conditionAssign possible accidental boolean assignment
constructorName + method with constructor name
dep-ann missing @Deprecated annotation
deprecation + deprecation outside deprecated code
discouraged + use of types matching a discouraged access rule
emptyBlock undocumented empty block
enumSwitch incomplete enum switch
fallthrough possible fall-through case
fieldHiding field hiding another variable
finalBound type parameter with final bound
finally + finally block not completing normally
forbidden + use of types matching a forbidden access rule
hiding macro for fieldHiding, localHiding, typeHiding and
maskedCatchBlock
incomplete-switch same as enumSwitch
indirectStatic indirect reference to static member
intfAnnotation + annotation type used as super interface
intfNonInherited + interface non-inherited method compatibility
javadoc invalid javadoc
localHiding local variable hiding another variable
maskedCatchBlock + hidden catch block
nls string literal lacking non-nls tag //$NON-NLS-<n>$
noEffectAssign + assignment without effect
null missing or redundant null check
over-ann missing @Override annotation
paramAssign assignment to a parameter
pkgDefaultMethod + attempt to override package-default method
raw usage of raw type
semicolon unnecessary semicolon, empty statement
serial + missing serialVersionUID
specialParamHiding constructor or setter parameter hiding another field
static-access macro for indirectStatic and staticReceiver
staticReceiver + non-static reference to static member
suppress + enable @SuppressWarnings
synthetic-access same as syntheticAccess
syntheticAccess synthetic access for innerclass
tasks(<tags separated by |>) tasks identified by tags inside comments
typeHiding + type parameter hiding another type
unchecked + unchecked type operation
unnecessaryElse unnecessary else clause
unqualified-field-access same as unqualifiedField
unqualifiedField unqualified reference to field
unused macro for unusedArgument, unusedImport, unusedLabel,
unusedLocal, unusedPrivate and unusedThrown
unusedArgument unread method parameter
unusedImport + unused import declaration
unusedLabel + unused label
unusedLocal + unread local variable
unusedPrivate + unused private member declaration
unusedThrown unused declared thrown exception
uselessTypeCheck unnecessary cast/instanceof operation
varargsCast + varargs argument need explicit cast
warningToken + unhandled warning token in @SuppressWarnings
Debug options:
-g[:lines,vars,source] custom debug info
-g:lines,source + both lines table and source debug info
-g all debug info
-g:none no debug info
-preserveAllLocals preserve unused local vars for debug purpose
Ignored options:
-J<option> pass option to virtual machine (ignored)
-X<option> specify non-standard option (ignored)
-X print non-standard options and exit (ignored)
-O optimize for execution time (ignored)
Advanced options:
@<file> read command line arguments from file
-maxProblems <n> max number of problems per compilation unit (100 by
default)
-log <file> log to a file. If the file extension is '.xml', then
the log will be a xml file.
-proceedOnError do not stop at first error, dumping class files with
problem methods
-verbose enable verbose output
-referenceInfo compute reference info
-progress show progress (only in -log mode)
-time display speed information
-noExit do not call System.exit(n) at end of compilation (n==0
if no error)
-repeat <n> repeat compilation process <n> times for perf analysis
-inlineJSR inline JSR bytecode (implicit if target >= 1.5)
-enableJavadoc consider references in javadoc
-Xemacs used to enable emacs-style output
-? -help print this help message
-v -version print compiler version
-showversion print compiler version and continue