java可变参数

public class Test {

    private static int getSum(int...arr){
        int sum = 0;
        for(int param : arr){
            sum+=param;
        }
        return sum;
    }
    
    public static void main(String[] args) {
        
        //0个数相加
        int zeroParam = getSum();
        System.out.println(zeroParam);
        
        //2个数相加
        int twoParam = getSum(5,6);
        System.out.println(twoParam);
        
        //数组求和
        int[] array = new int[8];
        array[0] = 0;
        array[1] = 1;
        array[2] = 2;
        array[3] = 3;
        array[4] = 4;
        array[5] = 5;
        array[6] = 6;
        array[7] = 7;        
        int arrayParam = getSum(array);
        System.out.println(arrayParam);  
    }  
}

public class Test {

    private static int getSum(int a,int...arr){
        int sum = a;
        for(int param : arr){
            sum+=param;
        }
        return sum;
    }
    
    public static void main(String[] args) {
        
        //0个数相加
        int zeroParam = getSum(1);
        System.out.println(zeroParam);
        
        //2个数相加
        int twoParam = getSum(1,5,6);
        System.out.println(twoParam);
        
        //数组求和
        int[] array = new int[8];
        array[0] = 0;
        array[1] = 1;
        array[2] = 2;
        array[3] = 3;
        array[4] = 4;
        array[5] = 5;
        array[6] = 6;
        array[7] = 7;
        
        int arrayParam = getSum(1,array);
        System.out.println(arrayParam);     
    }
}