All to be done in Java Swing. The goal of this project is to create a simple GUI
ID: 3856093 • Letter: A
Question
All to be done in Java Swing. The goal of this project is to create a simple GUI program. The Gui Interface needs to contain 1 JLabel, and 4 Jbuttons The gui components need to be contained within a JFrame. Additionally a Jpanel should be used to hel control the layout of the buttons. Use a GridLayout for the layout manager. The buttons should be in a 2x2 grid, with the JLabel above it above it. Dont worry about the functionality of the buttons, its the establishing the positions of the components that is giving me the trouble. Here is the code I have so far.
I've excluded some of the fluff that I have in the actual file such as the button click windows and what not. All I need is the keys to be in a grid layout of | FLabel |
|Uppercase Button| |Lowercase Button|
|NewPhrase Button| | Reset Button |
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.Label;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
/* HEADER**********************************************************
* AUTHOR:
* CONTACT:
* FILE NAME: Mainframe.java
* FILE DEPENDENCIES: Driver.java
* FILE DESCRIPTION: window's properties
* HEADER END******************************************************
*/
//make the horizontal and vertical gaps 15 & 15
//System.out.println( changeCase.toUpperCase( ) );
//System.out.println( changeCase.toUpperCase( ) );
public class MainFrame extends JFrame {
JLabel stringHolder;
JButton btnUpper;
JButton btnLower;
JButton btnNewPhrase;
JButton btnReset;
EchoUpperCaseClass btnEchoU;
EchoLowerCaseClass btnEchoL;
EchoGoToDefaultClass btnEchoD;
JPanel lblHolder;
JPanel btnHolder;
public MainFrame(){
btnHolder = new JPanel();
lblHolder = new JPanel();
stringHolder = new JLabel("Hello World", JLabel.CENTER);
btnUpper = new JButton("Uppercase");
btnEchoU = new EchoUpperCaseClass();
btnLower = new JButton("Lowercase");
btnEchoL = new EchoLowerCaseClass();
btnNewPhrase = new JButton("New Phrase");
btnReset = new JButton("Reset");
btnEchoD = new EchoGoToDefaultClass();
// adds panels to the window
this.add(btnHolder);
// this.add(lblHolder);
// button instances & window echos
btnHolder.add(stringHolder);
btnHolder.add(btnUpper);
btnUpper.addActionListener(btnEchoU);
btnUpper.setPreferredSize(new Dimension(40,40));
btnHolder.add(btnLower);
btnLower.addActionListener(btnEchoL);
btnLower.setPreferredSize(new Dimension(40,40));
btnHolder.add(btnNewPhrase);
btnNewPhrase.setPreferredSize(new Dimension(40,40));
btnHolder.add(btnReset);
btnReset.addActionListener(btnEchoD);
btnReset.setPreferredSize(new Dimension(40,40));
// window properties
setTitle("Hello World");
setSize(1200,1200);
setLayout(new GridLayout(2,2));
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
}
Explanation / Answer
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.Label;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
/* HEADER**********************************************************
* AUTHOR:
* CONTACT:
* FILE NAME: Mainframe.java
* FILE DEPENDENCIES: Driver.java
* FILE DESCRIPTION: window's properties
* HEADER END******************************************************
*/
//make the horizontal and vertical gaps 15 & 15
//System.out.println( changeCase.toUpperCase( ) );
//System.out.println( changeCase.toUpperCase( ) );
public class MainFrame extends JFrame implements ActionListener{
JLabel stringHolder;
JButton btnUpper;
JButton btnLower;
JButton btnNewPhrase;
JButton btnReset;
Button btnEchoU;
Button btnEchoL;
Button btnEchoD;
JPanel lblHolder;
JPanel btnHolder;
public MainFrame(){
btnHolder = new JPanel();
lblHolder = new JPanel();
stringHolder = new JLabel("Hello World", JLabel.CENTER);
btnUpper = new JButton("Uppercase");
//btnEchoU = new EchoUpperCaseClass();
btnLower = new JButton("Lowercase");
// btnEchoL = new EchoLowerCaseClass();
btnNewPhrase = new JButton("New Phrase");
btnReset = new JButton("Reset");
// btnEchoD = new EchoGoToDefaultClass();
// adds panels to the window
this.add(btnHolder);
this.add(lblHolder);
GridBagConstraints c = new GridBagConstraints();
c.gridx = 0;//set the x location of the grid for the next component
c.gridy = 2;//set the y location of the grid for the next component
// button instances & window echos
btnHolder.add(stringHolder);
//btnHolder.add(btnUpper);
//btnUpper.addActionListener(btnEchoU);
// btnUpper.setPreferredSize(new Dimension(40,40));
// btnHolder.add(btnLower);
// btnLower.addActionListener(btnEchoL);
// btnLower.setPreferredSize(new Dimension(40,40));
// btnHolder.add(btnNewPhrase);
//btnNewPhrase.setPreferredSize(new Dimension(40,40));
// btnHolder.add(btnReset);
JButton [][]buttons={{btnUpper,btnLower},{btnNewPhrase,btnReset}};
// btnReset.addActionListener(btnEchoD);
btnReset.setPreferredSize(new Dimension(40,40));
for (int k = 0; k < 2; k++) {
for (int j = 0; j < 2; j++) {
btnHolder.add(buttons[k][j]);
}
}
// window properties
setTitle("Hello World");
setSize(3000,3000);
lblHolder.setSize(1200,1200);
btnHolder.setSize(1200,800);
btnHolder.setLayout(new GridLayout(2,2));
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
}
public static void main(String []args)
{
MainFrame o=new MainFrame();
}
}