java - 无法调用方法

Question

我只是不能将该方法称为“plus”。我试图添加更多大括号，也是普通的大括号，但没有任何帮助!

package example;
import java.util.Scanner; 
public class HelloWorld {
public static void main(String[] args){
        Scanner a = new Scanner(System.in);
        Scanner b = new Scanner(System.in);
        int varTwo = b.nextInt();
        int varOne = a.nextInt();

        public static void plus (int aa, int bb) {
            return aa+bb;
            }
        plus(varOne, varTwo);
}

}

Exception in thread "main" java.lang.Error: Unresolved compilation problems: 
    void is an invalid type for the variable plus
    Syntax error on token "(", ; expected
    Syntax error on token ",", ; expected
    Syntax error on token ")", ; expected
    Void methods cannot return a value
    The method plus(int, int) is undefined for the type HelloWorld

    at example.HelloWorld.main(HelloWorld.java:10)

Answer 1

尝试这样:

package example;
import java.util.Scanner; 
public class HelloWorld {
    public static void main(String[] args){
        Scanner a = new Scanner(System.in);
        Scanner b = new Scanner(System.in);
        int varTwo = b.nextInt();
        int varOne = a.nextInt();


        plus(varOne, varTwo);
    }
    public static plus (int aa, int bb) {
        return aa+bb;
    }

}