TLDR
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java

 
Java Application Launcher. More information: https://docs.oracle.com/en/java/javase/17/docs/specs/man/java.html.
 
  • Execute a java .class file that contains a main method by using just the class name:
     
    java {{classname}}
     
  • Execute a java program and use additional third-party or user-defined classes:
     
    java -classpath {{path/to/classes1}}:{{path/to/classes2}}:. {{classname}}
     
  • Execute a .jar program:
     
    java -jar {{filename.jar}}
     
  • Execute a .jar program with debug waiting to connect on port 5005:
     
    java -agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=*:5005 -jar {{filename.jar}}
     
  • Display JDK, JRE and HotSpot versions:
     
    java -version
     
  • Display usage information for the java command:
     
    java -help

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