Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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I have this Java code

it's supposed to take in a user input and reverse it and then print it reversed

so if i enter Hello There

it's supposed to print out ereth olleh or something like that. just the phrase backwards

and a while loop is supposed to make sure that it keeps running back and doing the same thing over again until the user enters Done, done or d at which point the input is not to be printed

so user input is hi the first time, and the user input is hello the second time and if its done the third time 

ih

olleh  

are supposed to be printed but unfortunately the code i have bellow frequently throws up erros and prints the done which it should not do.  what am i doing wrong?

 

import java.util.Scanner;

public class LabProgram {
   public static void main(String[] args) {
      Scanner scnr = new Scanner(System.in);
      String stringman;
      stringman = "Hello There";
      
      if (stringman == "done")
         {
         System.exit(0);
         }
      else{
      while (stringman != "done")
      {
        
        
      StringBuilder input2 = new StringBuilder();
         input2.append(stringman);
         input2.reverse();
         System.out.println(input2);
         stringman = scnr.next();
         
        
      }
      }
      
      
   }
}

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Thank you so much

This works absolutely great it got rid of the errors  and doesnt print any done

but what do i do if i need  the phrase "Hello There" 

to print as "ereht olleH"

and then when it goes through the loop for another input for it to print a yeH bellow in reverse. so then I have an a total output of

"ereht olleH"

"yeH"

how do i do that?

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Follow-up Question

Thank you so much

This works absolutely great it got rid of the errors  and doesnt print any done

but what do i do if i need  the phrase "Hello There" 

to print as "ereht olleH"

and then when it goes through the loop for another input for it to print a yeH bellow in reverse. so then I have an a total output of

"ereht olleH"

"yeH"

how do i do that?

Solution
Bartleby Expert
by Bartleby Expert
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