Why is Javascript called Javascript, if it has nothing to do with Java?

Use a button in Javascript to change text?

I have made a javascript GUI in the program netbeans. It has a title, "Hello World" and a button. What I want to happen is, when you press the button, the text in the title changes to "Welcome to the wonderful world of programming" (This is for a school project) This is the code I am currently using for the button private void buttonActionPerformed(java.awt.event.Act... evt) { hello.setText("welcome to the wonderful world of programming"); } But when I run the program and press the button, nothing at all happens. FYI the heading variable is hello, and the program has matched them and is says everything in the code makes sense. Am I using the wrong command? If so, what do I use?
Answer:

Make sure your button variables are correctly set.

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Make sure your button variables are correctly set.

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