Java Tools Tutorials - Herong's Tutorial Examples - v6.23, by Herong Yang
"java -jar" - Specifying Executable JAR File
This section provides a tutorial example on how to use the '-jar' option for the 'java' tool to specify an executable JAR file.
In order to use the "java -jar" option, we need to create a JAR file with a "Main-Class" attribute in the manifest file.
Here is what I did to create a JAR file, and launch it with the "-jar" option.
First I created a manifest file, hello.fs, using a text editor. The extra blank line at the end of the file is important. Keep it:
Main-Class: Hello
Then I created an executable JAR file, hello.jar, with Hello.class and hello.fs:
herong> javac Hello.java herong> jar -cvmf hello.fs hello.jar Hello.class added manifest adding: Hello.class(in = 416) (out= 285)(deflated 31%)
Finally, I launched the Hello.class program included in the executable JAR file:
herong> java -jar hello.jar Hello world!
Table of Contents
javac - The Java Program Compiler
►java - The Java Program Launcher
java - Program Launching Command and Options
Launching Hello.java - My First Java Program
"java -classpath" - Specifying Class Path
►"java -jar" - Specifying Executable JAR File
"java -X" - Specifying Non-Standard Options
"java --list-modules" - Listing Modules in JDK
"java --describe-module" - Printing Module Definition
"java --module" - Launching Program from Module
"java --module" - Launching Program from Module JAR
javaw - Launching Java Programs without Console
jpackage - Binary Package Builder
javadoc - The Java Document Generator
jdeps - The Java Class Dependency Analyzer
jdeprscan - The Java Deprecated API Scanner
jcmd - The JVM Diagnostic Tool
jconsole - Java Monitoring and Management Console
jstat - JVM Statistics Monitoring Tool
jhsdb - The Java HotSpot Debugger
jvisualvm (Java VisualVM) - JVM Visual Tool
javap - The Java Class File Disassembler
keytool - Public Key Certificate Tool
jrunscript - Script Code Shell
native2ascii - Native-to-ASCII Encoding Converter