java -01 hellowod

 

 

public class HelloWord {
//类的声明
public static void main(String [] args) {
System.out.println("Hello World"); // 输出 Hello World
}
}

public class HelloWord {
//类的声明
public static void main(String [] args) {
int a = 1;
int b = 2;
System.out.println(a+b); // 输出 Hello World
}
}