//显示/int result =sum(a:10,b:20);报错
import java.util.*;
public class HelloWorld {
public static void main(String[] args) {
//System.out.println("Hello world!");
int result =sum(a:10,b:20);
System.out.println(result);
}
public static int sum(int a,int b){
return a+b;
}
public static double sum(double a, double b){
return a+b;
}
public static int sum(int a,int b,int c){
return a+b+c;
}
}