Javase (Hello,world) (ii)

After you've configured your JDK, start learning Java basics, and learn Java Platform standard Edition, Java Standards Edition,

Let us first understand the JRE, and Jdk,jre is the Java Runtime Environment, which contains the JVM (Java Virtual machine) and some class libraries run by Java

The JDK is an environment that contains some compilation tools to help develop with developers.

The first step is to create a new Notepad file, put it on the E-drive,

Modify the suffix name to change txt to Java and edit it

Explain the Code, class demo Create a new Java class

public static void Main (string[] args)

{

Main function, entry for program execution

System.out.print (string);//System printing method

println (string);//Line Wrap Print

}

Then run CMD.EXE

Entering the DOS interface, enter E: Carriage return

Javac 123.java Compiles a Java file, at which time a Java class file is generated under the E disk, Demo.class

Java demo is to run this file, this time our hello,world is printed out.

Javase (Hello,world) (ii)