我想要实现加减乘除的计算功能， 但是运行的时候结果都是Wrong？

我想要实现加减乘除的计算功能， 但是运行的时候结果都是Wrong！求大神讲解原因和解决方法！！多谢！！（小白一枚）

package com.practice.calculator;
import java.util.*;
public class Calculator {
    double num1;    
    double num2;
    public double calcAdd() {
        return num1+num2;
    }
    public void showAdd() {
        System.out.println("The result is :"+calcAdd());
    }
    public double calcMinus() {
        return num1-num2;
    }
    public void showMinus() {
        System.out.println("The result is :"+calcMinus());
    }
    public double calcMultiple() {
        return num1*num2;
    }
    public void showMultiple() {
        System.out.println("The result is :"+calcMultiple());
    }
    public double calcDivide() {
        return num1/num2;
    }
    public void showDivide() {
        System.out.print("The result is :"+calcDivide());
    }
    public static void main(String[] args) {
        Calculator Jason = new Calculator();
        Scanner input = new Scanner(System.in);
        System.out.print("Please enter the first number: ");
        Jason.num1=input.nextDouble();
        System.out.print("Please enter method: ");
        String method = input.next();
        System.out.print("Please enter the second number: ");
        Jason.num2=input.nextDouble();
        if (method=="+") {
            Jason.calcAdd();
            Jason.showAdd();
        } else if (method=="-") {
            Jason.calcMinus();
            Jason.showMinus();
        } else if (method=="*") {
            Jason.calcMultiple();
            Jason.showMultiple();
        } else if (method=="/") {
            Jason.calcDivide();
            Jason.showDivide();
        } else {
            System.out.print("Wrong!");
        }
    }

}

String类型的值比较用的是String的equals方法，用==判断的是地址，所以if判断条件显示他们都不相等，进入最好的else里面，应该用method.equals("+")判断

字符串比较使用equals
比如 "+".equals(methos)