Comparing Strings

[Michael Crump]

I'm trying to get some input using JOptionPane. I want the user to enter a string and if this string is equal to the string I'm looking for I want to execute some code.
The problem is I'm unsure how to do this. I've tried the following.

 if (string1.equalsIgnoreCase(string2))  
 // do something  

[Bear Bibeault]

"mesmer surprise", please check your private messages for an important administrative matter.

[Gamini Sirisena]

Doesn't it work for you?

If not can you post two sample strings that you are using?

[Senthil Kumar]

Hi Friend !!. Its simple

Use showInputDialog() in JOptionPane to get String

showInputDialog() has different method signatures other than i have used. please see javadoc .

package testpack;

import javax.swing.JApplet;
import javax.swing.JOptionPane;

public class OptionExample extends JApplet{

	public void init(){
		
		JOptionPane jop = new JOptionPane();
		String string1 = jop.showInputDialog("Enter a String");   //Using this to get the String
		String string2 = "Hello";
		 if (string1.equalsIgnoreCase(string2)) 
		 {
			 jop.showMessageDialog(this, "Both are Same", "Title", JOptionPane.INFORMATION_MESSAGE);
		 }
			
	}
}

<applet code ="OptionExample.java" width=300 height =300>
</applet>

[Rob Spoor]

Senthil Kumar wrote:

if (string1.equalsIgnoreCase(string2))

I'd change that to

if (string2.equalsIgnoreCase(string1))

, or at least

if (string1 != null && string1.equalsIgnoreCase(string2))

JOptionPane.showInputDialog returns null if the user presses Cancel, so your code would throw a NullPointerException if that woud occur.

[Senthil Kumar]

Friend , I am not giving you the Exact Code.

I gave you an Example. you have to write events for that.

Please have a look on this

http://java.sun.com/j2se/1.4.2/docs/api/javax/swing/JOptionPane.html


http://faq.javaranch.com/java/NotACodeMill

[Rob Spoor]

I know, but my warning is to prevent any unexpected errors when Michael just copies your little example and is not aware of the possible NullPointerException.

[Senthil Kumar]

Rob Prime wrote:I know, but my warning is to prevent any unexpected errors when Michael just copies your little example and is not aware of the possible NullPointerException.

Okay Rob