Java Hello World程序创建 仔细看看Java“Hello World” Java简单程序 Java Hello World程序创建 public class MyFirstJavaProgram { /* This is my first java program. * This will print 'Hello World' as the output */ public static void main(String []args) { System.out.println("Hello World"); // prints Hello World } } 仔细看看Java“Hello World” Java简单程序