Java tutorial
//package com.java2s; import java.awt.Dimension; import javax.swing.JFrame; public class Main { /** * Instances frame basics * @param mainView Frame which has been created. */ public static void instanceDefaults(JFrame mainView) { mainView.setLocationRelativeTo(null); mainView.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); mainView.pack(); mainView.setVisible(true); } /** * @param mainView * @param preferredWidth Frame preferred width. * @param preferredHeight Frame preferred height. */ public static void instanceDefaults(JFrame mainView, int preferredWidth, int preferredHeight) { mainView.getContentPane().setPreferredSize(new Dimension(preferredWidth, preferredHeight)); instanceDefaults(mainView); } }