java里的for循环

for循环是可以代替while循环

public class for循环基础 {
    public static void main(String[] args) {
        int a = 1;  //初始化条件
        while (a<=100){//条件判断
            System.out.println(a);  //循环体
            a+=2;  //迭代
             }
        System.out.println("while循环结束!");
        //初始化//条件判断//迭代
        for (int i=1;i<=100;i++){
            System.out.println(i);
        }
        System.out.println("for循环结束!");
    }
}

for循环的遍历

public class for遍历数组 {
    public static void main(String[] args) {


        int[] numbers = {10, 20, 30, 40, 50};   //定一个数组

        for (int i = 0; i < 5; i++) {
            System.out.println(numbers[i]);
        }
        System.out.println("=================");
        //遍历数组中的元素
        for (int x:numbers){
            System.out.println(x);
        }
    }
}

em.out.println(x);
}
}
}

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