tldr/pages/common/java.md

java

Java Application Launcher.

• Execute a java .class file that contains a main method by using just the class name:

java {{classname}}

• Custom input and output files. Preferably .txt files. This is useful when you don’t want to input from keyboard every time you run your class. Outputs from System.out.println(); are saved in the output file:

java {{classname}} <{{path/to/inputfile}}> {{path/to/outputfile}}

• Execute a .jar program:

java -jar {{filename.jar}}

• Display JDK, JRE and HotSpot versions:

java -version