动手动脑

package random;

import java.util.Random;

public class testseed1000 {

    public static void main(String[] args){
        Random ran =new Random(System.currentTimeMillis());
        for(int i=0;i<1000;i++){
            System.out.println(ran.nextInt());

        }
    }


}
关于生成1000个随机整数使用关于时间的seed种子创建随机数然后将其放入循环循环1000次`得到一千个随机整数.

public class MethodOverload {

    public static void main(String[] args) {
       System.out.println("The square of integer 7 is " + square(7));
       System.out.println("\nThe square of double 7.5 is " + square(7.5));
    }

    public static int square(int x) {
       return x * x;
    }

    public static double square(double y) {
       return y * y;
    }
}