029、Java中的四则运算

package TIANPAN;

/**
 * 此处为文档注释
 *
 * @author 田攀 微信382477247
 */
public class TestDemo {
    public static void main(String[] args) {
        int numA = 10;
        int numB = 20;
        System.out.println("加法计算：" + (numA + numB));
        System.out.println("减法计算：" + (numA - numB));
        System.out.println("乘法计算：" + (numA * numB));
        System.out.println("除法计算：" + (numA / (double) numB));
    }
}