Netbeans JFrame initialization; build is fine, but no window is made
java, jframe, netbeans, swing
Solution
You have to set the JFrame as your project's main class. Right click the name of the project(coffee cup icon) -> set configuration -> customize -> in the section 'Run' click on the Browse button to the right of "Main Class:" to select the default Main Class (your desired JFrame), done!
Problem
I'm using Java, and I am trying to create a GUI with NetBeans. I've done this before, and I'm very puzzled because my code, while NetBeans doesn't give errors, will not produce a new JFrame window when I run it in NetBeans. However, the code that initializes the JFrame is essentially identical to my previous GUI-possessing program ("program one"). When I try running "program one", it works just fine. Here is my problem code; ``` package aircannoncalculator; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTextField; public class CalcGUI extends JFrame { public CalcGUI(){ setTitle("Air Cannon Modeler"); setSize(400,400); setLocationRelativeTo(null); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public static void main(String[] args){ CalcGUI gui = new CalcGUI(); gui.setVisible(true); } } ``` According to NetBeans, the build always goes fine, but as I said, no actual window is produced. What am I doing wrong? Side note; ignore my gratuitous import list.