JDialogBox appears more than once and seems to be incrementing

[jumpgirl]

I'm trying to check the input of the user if it is present in dictionary.txt and I have this problem.
Everytime I try to click the button where I place the handler, it keeps on incrementing. I don't understand what is happening. The first I clicked the button the dialog box won't appear, the second try, it will appear once then the third it will appear twice and so on. I think there is something wrong with my condition and my loop.

public void compareDictionary(String input){
			try {
		        
		        bufferedReader = new BufferedReader(new FileReader("dictionary.txt"));
		        String line = null;
		        check = 0;
		        while ((line = bufferedReader.readLine()) != null) {
		        	
		        	if(input.equals(line)){
		        		System.out.println("Match found!");
		           		setCheck(1);
		        		break;	 
		        		}
		        	else if(input == ""){  //doesn't go here..i don't know why
		        		setCheck(2); 
		        		System.out.println("No input");
		        		//Grid.sbut.addActionListener(handler1);
		        		break;		
		            }
		        	else if(!(input.equals(line))){
 		        		setCheck(0);break;
		        	}
		             }
		        System.out.println("Check: "+ check );
		        
		    } catch (FileNotFoundException ex) {
		    	
		        ex.printStackTrace();
		    } catch (IOException ex) {
		        ex.printStackTrace();
		    } finally {
		         try {
		            if (bufferedReader != null)
		                bufferedReader.close();
		        } catch (IOException ex) {
		            ex.printStackTrace();
		        }
		        
		    }
		    getCheck = check;
		    System.out.println("Check:!! " + getCheck);
		    showMessage(); 
		}

	public void showMessage(){
		 	
		if(getCheck == 0){
			Grid.sbut.addActionListener(handler2);
		}
		if(getCheck == 1){
			Grid.sbut.addActionListener(handler);
		}
		if(getCheck == 2){
			Grid.sbut.addActionListener(handler1);
		}
	}

         public int getCheck(int check){
		return check;
	}

	public void setCheck(int check) {
		this.check = check;
	}

[yellowledbet]

Is Dialog box inside your handlers (handler, handler1, handler2)? Everytime your showMessage() is called an actionListener is added to Grid.sbut. When the button gets pushed every ActionListener you have added will be triggered. So if you have 10 ActionListeners they will all be fired.

[jumpgirl]

yes I placed it inside

private class HandleClass implements ActionListener{
		  public void actionPerformed(ActionEvent e){
			JOptionPane.showMessageDialog(new Grid(),"Match Found!");
		  }
	   }

Should I add removeActionListener function?

[jumpgirl]

ohh i got it!!
thanks for the hint :D

[jumpgirl]

what should I put in the condition if the input of the user is null?
i tried using this code but it doesn't work

 else if(input == ""){  //doesn't go here..i don't know why
                        setCheck(2); 
                        System.out.println("No input");
                        //Grid.sbut.addActionListener(handler1);
                        break;      
                    }

[yellowledbet]

Strings should be compared with the equals() method, which you have done in your other if statement conditions. (input == "") is comparing object references.

[jumpgirl]

I tried making it like this input.equals(null), but it still doesn't checks.

[jumpgirl]

it already works :D