FONT COLOUR private (java.awt.event.ActionEvent evt) {

// Red void jRadioButton1ActionPerformed

txtName.setForeground(new Color(255, 0, 0));

}

private void jRadioButton2ActionPerformed(java.awt.event.ActionEvent evt) {

// Green

txtName.setForeground(new Color(0, 255, 0));

}

private void jRadioButton3ActionPerformed(java.awt.event.ActionEvent evt) {

// Blue

txtName.setForeground(new Color(0, 0, 255));

}

private void jRadioButton4ActionPerformed(java.awt.event.ActionEvent evt) {

// Yellow

txtName.setForeground(new Color(255, 255, 0));

}

private void jCheckBox1ActionPerformed(java.awt.event.ActionEvent evt) {

txtName.setFont(new Font("Helvetica", Font.BOLD, 12));

}

private void jCheckBox2ActionPerformed(java.awt.event.ActionEvent evt) {

txtName.setFont(new Font("Helvetica", Font.ITALIC, 12));

}

private void jCheckBox3ActionPerformed(java.awt.event.ActionEvent evt) {

txtName.setFont(new Font("Helvetica", Font.BOLD + Font.ITALIC, 12));

}

private void jCheckBox4ActionPerformed(java.awt.event.ActionEvent evt) {

txtName.setFont(new Font("Helvetica", Font.PLAIN, 12));

}

private void btnExitActionPerformed(java.awt.event.ActionEvent evt) {

System.exit(0);

}

/**

* @param args the command line arguments

*/

public static void main(String args[]) {

java.awt.EventQueue.invokeLater(new Runnable() {

public void run() {

new FColorUI().setVisible(true);

}

});

}

HOTEL BILL

private void cmdClearActionPerformed(java.awt.event.ActionEvent evt) {

// Clearing textboxes,radio buttons and check boxes.

txtRate.setText("");

txtFacility.setText("");

txtAmount.setText("");

OptSingle.setSelected(false);

OptDouble.setSelected(false);

OptDelux.setSelected(false);

chkTour.setSelected(false);

chkGym.setSelected(false);

chkLaundry.setSelected(false);

}

private void formWindowGainedFocus(java.awt.event.WindowEvent evt) {

txtRate.enable(false);

txtAmount.enable(false);

txtFacility.enable(false);

}

private void cmdRateActionPerformed(java.awt.event.ActionEvent evt) {

// Assigning rate per day

if (OptSingle.isSelected())

txtRate.setText(Integer.toString(1500));

else

if (OptDouble.isSelected())

txtRate.setText(Integer.toString(2800));

else

if (OptDelux.isSelected())

txtRate.setText(Integer.toString(5000));

}

private void cmdAmountActionPerformed(java.awt.event.ActionEvent evt) {

// Finding the cost of facility

if (chkTour.isSelected())

txtFacility.setText(Integer.toString(7000));

else

if (chkGym.isSelected())

txtFacility.setText(Integer.toString(2000));

else

if (chkLaundry.isSelected())

txtFacility.setText(Integer.toString(1000));

Double TAmount = (Double.parseDouble(txtRate.getText()) * Double.parseDouble(txtDays.getText())) + Double.parseDouble(txtFacility.getText());

// Total amount

txtAmount.setText(Double.toString(TAmount));

}

private void cmdExitActionPerformed(java.awt.event.ActionEvent evt) {

System.exit(0);

}

/**

* @param args the command line arguments

*/

public static void main(String args[]) {

java.awt.EventQueue.invokeLater(new Runnable() {

public void run() {

new HotelBillUI().setVisible(true); } });}

SWAP NUMBERprivate void btnChangeActionPerformed(java.awt.event.ActionEvent evt) {

int X, Y, temp;

X = Integer.parseInt(txtNum1.getText());

Y = Integer.parseInt(txtNum2.getText());

jTextArea1.append("Value before swapping is : " + X + " " + Y + "\n");

// Using third variable

temp = X;

X = Y;

Y = temp;

jTextArea1.append("Value after swapping is : " + X + " " + Y);

}

private void btnExitActionPerformed(java.awt.event.ActionEvent evt) {

System.exit(0);

}

UL CASEprivate void btnConActionPerformed(java.awt.event.ActionEvent evt) {

String str = txtUL.getText();

txtLower.setText(str.toLowerCase());

txtUpper.setText(str.toUpperCase());

}

private void btnExitActionPerformed(java.awt.event.ActionEvent evt) {

System.exit(0);

}

/**

* @param args the command line arguments

*/

public static void main(String args[]) {

java.awt.EventQueue.invokeLater(new Runnable() {

public void run() {

new ULCaseUI().setVisible(true);

}

});

}

GRADEprivate void btnCalcActionPerformed(java.awt.event.ActionEvent evt) {

int m1, m2, m3, total;

String grade;

m1 = Integer.parseInt(txtM1.getText());

m2 = Integer.parseInt(txtM2.getText());

m3 = Integer.parseInt(txtM3.getText());

total = m1 + m2 + m3;

grade = (total >=200) ? "A" : "B";

txtTot.setText(Integer.toString(total));

txtGrade.setText(grade);

}

private void btnExitActionPerformed(java.awt.event.ActionEvent evt) {

System.exit(0);

}

TEMPERATURE

private void btnEXitActionPerformed(java.awt.event.ActionEvent evt) {

System.exit(0);

}

private void btnFTOCActionPerformed(java.awt.event.ActionEvent evt) {

// Declare the format constructor

DecimalFormat twoDigits = new DecimalFormat("0.00");

int F;

double C = 0;

F = Integer.parseInt(txtF.getText());

C = 5.0/9.0 * (F-32);

txtC.setText(twoDigits.format(C)); }