"javac" - Java Compilation Command

Android Tutorials - Herong's Tutorial Examples

∟"javac" - Java Compilation Command

This section describes 'javac', the Java compilation command, provided from the JDK (Java Development Kit) package.

The next tool used in the "ant -verbose debug" command is the "javac" tool, which comes from JDK (Java Development Kit).

If you are new to the "javac" tool, you can run it with "-help" option to get some usage information:

C:\herong\HelloAndroid>\Progra~1\Java\jdk1.8.0_45\bin\javac -help

Usage: javac <options> <source files>
where possible options include:
-g                     Generate all debugging info
-g:none                Generate no debugging info
-g:{lines,vars,source} Generate only some debugging info
-nowarn                Generate no warnings
-verbose               Output messages about what the compiler is \
                       doing
-deprecation           Output source locations where deprecated APIs \
                       are used
-classpath <path>      Specify where to find user class files and \
                       annotation processors
-cp <path>             Same as -classpath
-sourcepath <path>     Specify where to find input source files
-bootclasspath <path>  Override location of bootstrap class files
-extdirs <dirs>        Override location of installed extensions
-endorseddirs <dirs>   Override location of endorsed standards path
-proc:{none,only}      Control whether annotation processing and/or \
                       compilation is done.
-processor <class1>[,<class2>,<class3>...] Names of the annotation \
                       processors to run; bypasses default discovery \
                       process
-processorpath <path>  Specify where to find annotation processors
-d <directory>         Specify where to place generated class files
-s <directory>         Specify where to place generated source files
-implicit:{none,class} Specify whether or not to generate class files \
                       forimplicitly referenced files
-encoding <encoding>   Specify character encoding used by source files
-source <release>      Provide source compatibility with specified \
                       release
-target <release>      Generate class files for specific VM version
-version               Version information
-help                  Print a synopsis of standard options
-Akey[=value]          Options to pass to annotation processors
-X                     Print a synopsis of nonstandard options
-J<flag>               Pass <flag> directly to the runtime system
-Werror                Terminate compilation if warnings occur
@<filename>            Read options and filenames from file

The "javac" command line used by the "ant -verbose debug" command should be like this:

C:\herong\HelloAndroid>\Progra~1\Java\jdk1.8.0_45\bin\javac
-sourcepath .\src;.\gen -d .\bin\classes -classpath .\bin\classes;.\;
\local\android-sdk-windows\tools\support\annotations.jar
-target 1.5 -source 1.5
-bootclasspath \local\android-sdk...\platforms\android-15\android.jar;
\local\android-sdk...\add-ons\addon-goo...-google-22\libs\effects.jar;
\local\android-sdk...\add-ons\addon-goo...-google-22\libs\usb.jar;
\local\android-sdk...\add-ons\addon-goo...google-22\libs\maps.jar
-encoding UTF-8 -g