代餐带返回值的java程序错哪里了。。

Question

Multiple markers at this line - a cannot be resolved to a variable - Syntax error on token "int", delete this  token - b cannot be resolved to a variable - Syntax error on token "int", delete this  token以下是代码：package 全球我; public class AAS {    public static void main(String[] args) {        AAS hello=new AAS();        hello.add(18,20);        int sum=hello.add(int a,int b);        System.out.print(sum);   }    public int add(int a,int b){    int sum=a+b;    return sum;} }我懂了我懂了，谢谢，不知道怎么关闭问题。。