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For my java courses all of our programs had to be run from command prompt so I understand your need. A lot of prof's want you to be comfortable with the command line. First, you have to navigate to the folder where the java file is located. You can do this using the "cd" command to move around to where you keep your files. Then you compile the program from the java file with the main method. Make sure any class files you need are in same folder. compile: javac MainMethodFile.java If no exceptions, then you launch: java MainMethodFile Make sure to just use the file name not the whole file extension when you launch. Don't use the .java or .class extension. More on reddit.com

How can I run a Java program from the command line on Windows? I’m trying to execute the following Java program from the command line in Windows: import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import ... More on community.lambdatest.com

I am currently taking a class on java and we use jGrasp very easy and simple layout! To use this you will need JRE and JDK . Good Luck! More on reddit.com