Foreach 语法

import java.util.*;
public class GSX52 {
    public static void main(String[] args){
        Random rand = new Random(47);
        float f[] = new float[10];
        for(int i=0;i<10;i++){
            f[i]= rand.nextFloat();
        }
        for (float x:f)
            System.out.println(x);
    }
}

运行结果配图

import java.util.*;
public class GSX52 {
    public static void main(String[] args){
        Random rand = new Random(2);
        //float f[] = new float[10];
        int f[] =new int[10];
        for(int i=0;i<10;i++){
            f[i]= rand.nextInt();
            System.out.println(f[i]);
        }
        for (int x:f)
            System.out.println(x);
    }
}

运行结果配图

import java.util.*;
public class GSX52 {
    public static void main(String[] args){
        for(char c : "An African Swallow".toCharArray())
            System.out.println(c+" ");
    }
}

运行结果配图