Demo07.java

public class Demo07 {
    public static void main (String [] args){
     //int sum = add(2,5); //实际参数
     //System.out.println(sum);
        test ();
    }
    public static int add(int a,int b){//形式参数,用来定义作用的.
        return a+b;
    }
    public static  void test(){
        for(int i = 0;i<=1000;i++) {
            if (i%5==0){
                System.out.print( i+"\t" );
            }
            if (i%(5*3)==0){
                System.out.println();
                //System.out.printf("\n");
            }
        }
        }
    }