Probably simple problem with while loops

I was programming something for a CS class and came across a problem I can't explain with while loops. The condition for the loop is true, but the loop doesn't continue; it terminates after executing once. The actual program was bigger than this, but I isolated my problem to a short loop:
import java.util.Scanner;
public class ok {
public static void main(String[] args){
     Scanner scan = new Scanner(;
     String antlol = "p";
     while(antlol == "p" || antlol == "P"){
          System.out.println("write a P so we can get this over with");
          antlol = scan.nextLine(); 
//it terminates after this, even if I type "P", which should make the while condition true.

Thanks, that worked.
I think my real problem with this program was my CS
teacher, who never covered how to compare strings,Here's something important.
This isn't just about comparing Strings. This applies to comparing ANY objects. When you use == that compares to see if two references refer to the same instance. equals compares objects for equality in the sense that equality means they have equal "content" as it were.

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    can be a 'MapManager' (ahem) that controls the access to this master
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    collection is supposed to store all those words. Maybe you want to
    store just the unique words, maybe you want to store them all, including
    the duplicates etc. etc. The MapManager depends on a CollectionBuilder,
    i.e. a simple thing that is able to deliver a new collection to be associated
    with a file name. Here's the CollectionBuilder:public interface CollectionBuilder {
       Collection getCollection();
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  • Problem with while loop in thread: starting an audiostream

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    Is my question not clear enough? Do you need more info? Or is nobody here familiar with javax.sound.sampled?
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  • Problem with While Loop.

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  • Time not stopping with while loop

    I've attached my VI.  I am having trouble with while loops.
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    LabVIEW Champion . Do more with less code and in less time .
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    nichts wrote:
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  • Problems with opening file with while loop

    Greetings everyone,
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  • Problem using while loop with !=

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  • Problem with a loop

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    mark2685 wrote:
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    cursor position indicator.PNG ‏7 KB

  • Noob Help with While Loop

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  • Problem with multiple loops

    Hi all,
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    Here's what I had in mind (LabVIEW 7.0).
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    LabVIEW Champion . Do more with less code and in less time .
    Attachments: ‏53 KB
    SampleFewer.png ‏9 KB

  • Help needed with while loops please :)

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    It would help if you put aside your code, and wrote out some pseudo-code first so that you understand the steps you will need to take. for example
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    output sum of evensthat block, when coded, will solve 3 of the problems, the other 2 will require separate loops
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  • Need help with while loop and shift registers

    I have a large data set and need to read in the data at maybe 200 samples at a time, process these samples through my VI, and have it append and concatenate a separate lvm file.  The part where I am confused is the shift registers. How do I limit the number of samples read in an iteration? How do I get the while loop to stop when all the data are read in?
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    This will give you an idea.  There are plenty of other (probably more efficient) methods.  This is a basic, quick and dirty solution to help you grasp the overall concept.
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    ShiftRegLoop.JPG ‏54 KB

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