Special Edition Using Java 2, Standard Edition (Special Edition Using...)

2017-07-07 02:10:07

`javac ”` The Java Compiler

The javac program is the tool you use to compile .java files into class files that can be run by the interpreter. The command is executed like this:

javac <options> <sourcefiles>

Table B.2 lists the Java compiler options.

Table B.2. Java Compiler Options

Option	Description
`-g`	Generates all debugging information.
`-g:none`	Doesn't generate any debugging information.
`-verbose`	Outputs messages that describe what the compiler is doing.
`- deprecation`	Outputs source locations where deprecated API's are being used.
`-classpath < path >`	Overrides the default `CLASSPATH` environment variable and specifies a new path to look up classes. Make certain you always include library classes, such as `jdk1.2\ jre\ rt.jar` .
`-d <directory>`	Specifies the directory to place the resulting class files in. Note the directory specifies the root location.
`-nowarn`	Turns off warnings. When this is turned off, the compiler does not generate any warning messages. Note: This option is available in JDK 1.1 and above, but not in JDK 1.0.
`-O`	Turns optimization on. This causes all `static` , `final` , and `private` methods to be placed inline. Although this can result in faster performance, it might also cause your class files to become larger.
`-target <release>`	Generates class files for a specific VM.
`-sourcepath`	Specifies where to find input source files.

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