this is the main class
import java.awt.event.*;
import javax.swing.*;
import javax.swing.JPanel;
public class Password {
public static void main(String[] args) {
final JFrame frame = new JFrame("Password Field");
JLabel lblUser = new JLabel("User Name:");
JTextField tfUser = new JTextField(20);
lblUser.setLabelFor(tfUser);
JLabel lblPassword = new JLabel("Password:");
final JPasswordField pfPassword = new JPasswordField(20);
lblPassword.setLabelFor(pfPassword);
JButton btnLogin = new JButton("Login");
btnLogin.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
String password = new
String(pfPassword.getPassword());
if(password =="milkyoreos201") {
}
}
});
JButton btnGet = new JButton("Display Password");
btnGet.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
String password = new
String(pfPassword.getPassword());
JOptionPane.showMessageDialog(frame,
"Password is " + password);
}
});
JPanel panel = new JPanel();
panel.setLayout(new SpringLayout());
panel.add(lblUser);
panel.add(tfUser);
panel.add(lblPassword);
panel.add(pfPassword);
panel.add(btnLogin);
panel.add(btnGet);
SpringUtilities.makeCompactGrid(panel,
3, 2, //rows, cols
6, 6, //initX, initY
6, 6); //xPad, yPad
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(300, 120);
frame.getContentPane().add(panel);
frame.setVisible(true);
}
}
and this is the other class
import javax.swing.*;
import javax.swing.SpringLayout;
import java.awt.*;
public class SpringUtilities {
public static void printSizes(Component c) {
System.out.println("minimumSize = " + c.getMinimumSize());
System.out.println("preferredSize = " + c.getPreferredSize());
System.out.println("maximumSize = " + c.getMaximumSize());
}
public static void makeGrid(Container parent,
int rows, int cols,
int initialX, int initialY,
int xPad, int yPad) {
SpringLayout layout;
try {
layout = (SpringLayout)parent.getLayout();
} catch (ClassCastException exc) {
System.err.println("The first argument to makeGrid must use
SpringLayout.");
return;
}
Spring xPadSpring = Spring.constant(xPad);
Spring yPadSpring = Spring.constant(yPad);
Spring initialXSpring = Spring.constant(initialX);
Spring initialYSpring = Spring.constant(initialY);
int max = rows * cols;
Spring maxWidthSpring =
layout.getConstraints(parent.getComponent(0)).
getWidth();
Spring maxHeightSpring =
layout.getConstraints(parent.getComponent(0)).
getWidth();
for (int i = 1; i < max; i++) {
SpringLayout.Constraints cons = layout.getConstraints(
parent.getComponent(i));
maxWidthSpring = Spring.max(maxWidthSpring, cons.getWidth());
maxHeightSpring = Spring.max(maxHeightSpring, cons.getHeight());
}
for (int i = 0; i < max; i++) {
SpringLayout.Constraints cons = layout.getConstraints(
parent.getComponent(i));
cons.setWidth(maxWidthSpring);
cons.setHeight(maxHeightSpring);
}
SpringLayout.Constraints lastCons = null;
SpringLayout.Constraints lastRowCons = null;
for (int i = 0; i < max; i++) {
SpringLayout.Constraints cons = layout.getConstraints(
parent.getComponent(i));
if (i % cols == 0) {
lastRowCons = lastCons;
cons.setX(initialXSpring);
} else {
cons.setX(Spring.sum(lastCons.getConstraint(SpringLayout.EAST),
xPadSpring));
}
if (i / cols == 0) {
cons.setY(initialYSpring);
} else {
cons.setY(Spring.sum(lastRowCons.getConstraint(SpringLayout.SOUTH),
yPadSpring));
}
lastCons = cons;
}
SpringLayout.Constraints pCons = layout.getConstraints(parent);
pCons.setConstraint(SpringLayout.SOUTH,
Spring.sum(
Spring.constant(yPad),
lastCons.getConstraint(SpringLayout.SOUTH)));
pCons.setConstraint(SpringLayout.EAST,
Spring.sum(
Spring.constant(xPad),
lastCons.getConstraint(SpringLayout.EAST)));
}
private static SpringLayout.Constraints getConstraintsForCell(
int row, int col,
Container parent,
int cols) {
SpringLayout layout = (SpringLayout) parent.getLayout();
Component c = parent.getComponent(row * cols + col);
return layout.getConstraints(c);
}
public static void makeCompactGrid(Container parent,
int rows, int cols,
int initialX, int initialY,
int xPad, int yPad) {
SpringLayout layout;
try {
layout = (SpringLayout)parent.getLayout();
} catch (ClassCastException exc) {
System.err.println("The first argument to makeCompactGrid must
use SpringLayout.");
return;
}
Spring x = Spring.constant(initialX);
for (int c = 0; c < cols; c++) {
Spring width = Spring.constant(0);
for (int r = 0; r < rows; r++) {
width = Spring.max(width,
getConstraintsForCell(r, c, parent,
cols).
getWidth());
}
for (int r = 0; r < rows; r++) {
SpringLayout.Constraints constraints =
getConstraintsForCell(r, c, parent, cols);
constraints.setX(x);
constraints.setWidth(width);
}
x = Spring.sum(x, Spring.sum(width, Spring.constant(xPad)));
}
Spring y = Spring.constant(initialY);
for (int r = 0; r < rows; r++) {
Spring height = Spring.constant(0);
for (int c = 0; c < cols; c++) {
height = Spring.max(height,
getConstraintsForCell(r, c, parent,
cols).
getHeight());
}
for (int c = 0; c < cols; c++) {
SpringLayout.Constraints constraints =
getConstraintsForCell(r, c, parent, cols);
constraints.setY(y);
constraints.setHeight(height);
}
y = Spring.sum(y, Spring.sum(height, Spring.constant(yPad)));
}
SpringLayout.Constraints pCons = layout.getConstraints(parent);
pCons.setConstraint(SpringLayout.SOUTH, y);
pCons.setConstraint(SpringLayout.EAST, x);
}
}
this is my first time building a password gui, so sorry if i did a bunch of stuff incorrectly. i want this program to open up a dialog box, telling you info. when you type in the correct user name and password. i have everything except a specific user name and password, and i tried to make a dialog box, but it wouldn't appear.
