Java First day Writing Java program

Written in Notepad, the source file suffix. java;

Compile to a bytecode file (. class, System-independent) using the compiler (compiler) Javac; "E:" to the e-packing directory, "dir" Display directory, input "Javac Helloworld.java" compiled successfully, the directory has a. class file (can be opened directly, garbled)

Use the Interpreter (interpreter) Java command to interpret the bytecode file,//Enter "Java Helloworld", the Java command is the Interpretation tool, the following file can not be suffixed; direct execution.

Get the running result.

Java First day Writing Java program