动态参数

动态参数，参数的个数不限制

public void sum(int... params){int sum = 0;for(int a:params){sum+=a;}System.out.println(sum);}@Testpublic void handle5(){handle4(1,2,3,4);}

两个参数

public void sum1(int a,int b){     int sum = a+b;     return sum;}

三个参数

public int sum2(int a,int b,int c){   int sum =0;   sum = a+b+c;   return sum;}