C.13. Verifying Set-up
C.13.1. Java 2 Standard Edition (J2SE)
Windows Platform
Verify the CLASSPATH and CP variables, as shown in Figure C-10.
Figure C-10. Verify CLASSPATH Variables
D:>Set | more |
This should show the same environment variables as in your previous definition.
Verify the JRE installation by checking the version of the run time (see Figure C-11).
Figure C-11. Verify the J2SE Version Number
D:>java -version
java version "1.4.0_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0_01-b03)
Java HotSpot(TM) Client VM (build 1.4.0_01-b03, mixed mode)
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This verifies the same software version of the J2SE run-time library.
Verify the SDK installation, as shown in Figure C-12.
This denotes the Java compiler is available for compiling Java classes now.
Figure C-12. Verify the J2SE SDK Installation
D:>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
-O Optimize; may hinder debugging or enlarge class file
-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
-sourcepath <path> Specify where to find input source files
-bootclasspath <path> Override location of bootstrap class files
-extdirs <dirs> Override location of installed extensions
-d <directory> Specify where to place generated class 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
-help Print a synopsis of standard options
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