Java的可变参数

package practise;

public class Variable {
    
    public static void main(String[] args) {
        
        System.out.println(add(1,2));
        System.out.println(add(1,2,3,4));
    }
    
    public static int add(int x,int ... args){
        int sum = x;
        for (int i = 0; i < args.length; i++) {
            sum +=args[i];
        }
        return sum;
        
    }

}

result: 3
        10