<div>
JOptionPane.showMessageDia<wbr />log(this, &quot;message&quot;, &quot;Error occured&quot;, JOptionPane.WARNING_MESSAG<wbr />E);<br />
<br />
JOptionPane.showMessageDia<wbr />log(this, &quot;message&quot;, &quot;Error occured&quot;, JOptionPane.ERROR_MESSAGE)<wbr />; <br />
<br />
and so on....<br />
<br />
<br />
<br />

</div>


JOptionPane.showMessageDialog(this, "message", "Error occured", JOptionPane.WARNING_MESSAGE);

JOptionPane.showMessageDialog(this, "message", "Error occured", JOptionPane.ERROR_MESSAGE);

and so on....





<div>
import javax.swing.* or javax.swing.JOptionPane for that. The parameters are: parent-frame, message, title, type-of-message.
</div>


import javax.swing.* or javax.swing.JOptionPane for that. The parameters are: parent-frame, message, title, type-of-message.

<div>
<div class="content wysiwyg-content">
In my Java-Program I want to pop up a message dialog or message box such as:<br />
<br />
...<br />
...<br />
if(error)<br />
&nbsp; pop-up error message;<br />
<br />
...<br />
...<br />
<br />
Is there any easy way to do that?
</div>
</div>


In my Java-Program I want to pop up a message dialog or message box such as:

...
...
if(error)
  pop-up error message;

...
...

Is there any easy way to do that?

How to popup a message?

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.