打印数组所有元素，求和，求最大值

package array;

public class ArrayDemo3 {
    public static void main(String[] args) {
        int[] arrays = {1,2,3,4,5};
        //打印数组所有元素
        for (int i = 0; i < arrays.length; i++) {
            System.out.println(arrays[i]);
        }
        System.out.println("=========================");
        //计算所有元素总和
        int sum = 0;
        for (int i = 0; i < arrays.length; i++) {
            sum = sum+arrays[i];
        }
        System.out.println("数组所有元素总和为："+sum);
        System.out.println("=====================");
        //查找数组最大元素
        int max = arrays[0];
        if (arrays.length==0){
            System.out.println("数组为空");
        }else {
            for (int i = 0; i < arrays.length; i++) {
                if (arrays[i]>max){
                    max=arrays[i];
                }
            }
            System.out.println("数组最大元素为："+max);
        }

    }

}