使用java"if"语句时遇到问题

Question

我正在尝试通过编写一个简单的每周计划程序来自学java,并且我的代码中的if语句让我感到悲伤,这是我的代码:

import java.util.Scanner;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
public class Week
{
 public static void main(String[] args) throws IOException
 {
   Scanner inorout = new Scanner(System.in);
   System.out.println("Do you want to read or write (r/w)");
   String decision = inorout.nextLine();
   System.out.println(decision);
   if(decision == "r")
   {
     System.out.println("It has gone into the if");
     Scanner namer = new Scanner(System.in);
     System.out.println("What is the name of the week you want to read?");
     String r = namer.nextLine();
     Scanner s = new Scanner(new File(r + ".txt"));
     System.out.println("What is Your Name?");
     String name = s.nextLine();
     System.out.println("Welcome " + name);
   }    
 }
}

当我编译使用Drjava并输入"R"的程序是不一样,如果statment运行,我在茫然,什么是错,帮助将大大appriciated

Answer 1

Java中的字符串通常与equals不进行比较==.