用java计算两数的和，差，最大值，最小值并输出

用java计算两数的和，差，最大值，最小值并输出

这个是输出菱形的
import java.util.*;
public class lingxing
{
public static void main(String []args)
{
int i,j,k,x,n;
System.out.println("请输入你定义的数值");
Scanner sc=new Scanner(System.in);
n=sc.nextInt();
for(i=0;i<=n-1;i++)
{
for(j=0;j<=n-i-1;j++)
{
System.out.print(" ");
}
for(k=0;k<=2*i;k++)
{
System.out.print("*");
}
System.out.print("\n");
}
for(i=0;i<=n-1;i++)
{
for(j=0;j<=i+1;j++)
{
System.out.print(" ");
}
for(k=0;k<=2*(n-i-2);k++)
{
System.out.print("*");
}
System.out.print("\n");
}
}
}

class Test { public static void comput(int a,int b) { System.out.println(" a + b ="+(a+b)); System.out.println(" a - b ="+(a-b)); System.out.println(" 最大值:"+(a > b:a?b)); System.out.println(" 最小值:"+(a < b:a?b)); } public static void main(String[] args) { int a=6; int b=2; comput( a, b); } } 这样就可以了 !

public double he(double a,double b)//两数和 { System.out.printfln(a+b); } public double he(double a,double b)//两数差 { System.out.printfln(a-b); } public double he(double a,double b)// 大值 { (a>b)?(System.out.printfln(a);):(System.out.printfln(b);) } public double he(double a,double b)//小值 { (a<b)?(System.out.printfln(a);):(System.out.printfln(b);) }