打开一个新的 JFrame

Question

I have a main JFrame that has all kinds of panels in it for different functions and people can calculate things in them. I want to open a new JFrame when the user hits the first calculate button and serve as a Output window (Simlar to SPSS output windows if you are familiar with them).

The New JFrame will be completely separate and will have its own menu bar ... A simple JDialog is not the way to go here.

Answer 1

• can't resist, simple disagree with answers JFrame frame = new JFrame( ); and frame.setVisible(true);

I want to open a new JFrame when the user hits the first calculate button and serve as a Output window (Simlar to SPSS output windows if you are familiar with them).

• don't do that, create only two JFrames , reuse 2nd. JFrame by using getContentPane.removeAll() , for another actions from JButton

• then all lifecycle will be only about setVisible(true) / setVisible(false)

• change DefaultCloseOperations to HIDE_ON_CLOSE

The New JFrame will be completely separate and will have its own menu bar. A simple JDialog is not the way to go here.

• whats wrong with JDialog , only one button in the Toolbar in compare with three buttons in JFrame , simple disagree,

Output window (Simlar to SPSS output windows if you are familiar with them).

• use SwingWorker or Runnable#Thread (required wrap into invokeLater ) for get value for JComponents placed into JDialog, if all changes are done call JDialog.setVisible(true) wrapped into invokeLater()

Answer 2

JFrame newFrame = new JFrame();
newFrame.setVisible(true);

Answer 3

Never use more than one JFrame within a Swing application. Use JDialog for extra windows instead.

See The Use of Multiple JFrames, Good/Bad Practice? .

Answer 4

I maybe mis understanding your question but

JFrame frame = new JFrame();
frame.setVisible(true);

Answer 5

I used code JFrame frame = new JFrame(); frame.setVisible(true); JFrame frame = new JFrame(); frame.setVisible(true); . This block of code just do empty window.