Java——写一个求和 “方法”

在c语言中叫做函数

撸代码：

import java.math.*;
import java.util.Scanner;
/*导入一个 math包
 * BigDecimal 精确小数
 * BigInt 超大数
*/
public class TestPrimitiveData {
	public static void main(String[] args) {
		TestPrimitiveData tm = new TestPrimitiveData();
		int a=1,b=2;
		System.out.println("sum = "+tm.sum(a,b));
		System.out.printf("add = %d\n",add(a, b));
		System.out.printf("result = %s%n",result(a,b));
	}
	public  static int add(int x,int y) {
		int sum=x+y;
		return sum;
	}
	int sum(int x,int y) {
		int a=x+y;
		return	a;
	}
	 static int count=0;
	 static int result(int a,int b) {
		count++;
		return a+b;
	}

}