// Temperature convertor public class Temperature_converter extends javax.swing.JFrame { //Variable Declaration private javax.swing.JButton jButton1; private javax.swing.JButton jButton2; private javax.swing.JButton jButton3; private javax.swing.JCheckBox jCheckBox2; private javax.swing.JComboBox jComboBox1; private javax.swing.JComboBox jComboBox2; private javax.swing.JLabel jLabel1; private javax.swing.JPanel jPanel2; private javax.swing.JSpinner jSpinner1; private javax.swing.JTextField jTextField1; private javax.swing.JTextField jTextField2; public Temperature_converter() { initComponents(); } private void initComponents() { jCheckBox2 = new javax.swing.JCheckBox(); jSpinner1 = new javax.swing.JSpinner(); jPanel2 = new javax.swing.JPanel(); jLabel1 = new javax.swing.JLabel(); jComboBox1 = new javax.swing.JComboBox<>(); jComboBox2 = new javax.swing.JComboBox<>(); jTextField1 = new javax.swing.JTextField(); jTextField2 = new javax.swing.JTextField(); jButton1 = new javax.swing.JButton(); jButton2 = new javax.swing.JButton(); jButton3 = new javax.swing.JButton(); jCheckBox2.setText("jCheckBox2"); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); setTitle("Tempertaure Converter"); jPanel2.setBackground(new java.awt.Color(51, 51, 51)); jLabel1.setBackground(new java.awt.Color(255, 255, 255)); jLabel1.setFont(new java.awt.Font("Segoe UI", 1, 24)); // NOI18N jLabel1.setForeground(new java.awt.Color(255, 255, 255)); jLabel1.setText("Temperature Converter "); javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2); jPanel2.setLayout(jPanel2Layout); jPanel2Layout.setHorizontalGroup( jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel2Layout.createSequentialGroup() .addGap(142, 142, 142) .addComponent(jLabel1) .addContainerGap(161, Short.MAX_VALUE)) ); jPanel2Layout.setVerticalGroup( jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel2Layout.createSequentialGroup() .addGap(19, 19, 19) .addComponent(jLabel1) .addContainerGap(23, Short.MAX_VALUE)) ); jComboBox1.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Celsius", "Fahrenheit" })); jComboBox2.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Celsius", "Fahrenheit" })); jTextField2.setEditable(false); jButton1.setFont(new java.awt.Font("Segoe UI", 3, 14)); // NOI18N jButton1.setText("Convert"); jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } }); jButton2.setFont(new java.awt.Font("Segoe UI", 3, 14)); // NOI18N jButton2.setText("Clear"); jButton2.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton2ActionPerformed(evt); } }); jButton3.setFont(new java.awt.Font("Segoe UI", 3, 14)); // NOI18N jButton3.setText("Exit"); jButton3.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton3ActionPerformed(evt); } }); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGap(50, 50, 50) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false) .addComponent(jComboBox2, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(jComboBox1, 0, 116, Short.MAX_VALUE)) .addGap(133, 133, 133) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 97, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 97, javax.swing.GroupLayout.PREFERRED_SIZE)) .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(jButton1) .addGap(30, 30, 30) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jButton3) .addComponent(jButton2)) .addGap(29, 29, 29)) .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(46, 46, 46) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGap(3, 3, 3) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jButton1) .addComponent(jButton2)) .addGap(18, 18, 18) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, 33, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(jButton3) .addGap(37, 37, 37)) ); pack(); }// private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) { System.exit(0); } private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { jTextField1.setText(""); jTextField2.setText(""); } private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { String val1=(String)jComboBox1.getSelectedItem(); String val2=(String)jComboBox2.getSelectedItem(); if(val1.equals("Celsius") && val2.equals("Fahrenheit")){ double cel = Double.parseDouble(jTextField1.getText()); double fah = (double)((9.0/5.0)*cel + 32); jTextField2.setText(String.valueOf(fah)); } else if(val1.equals("Celsius") && val2.equals("Celsius")) { double c = Double.parseDouble(jTextField1.getText()); jTextField2.setText(String.valueOf(c)); } if(val1.equals("Fahrenheit") && val2.equals("Celsius")) { double f = Double.parseDouble(jTextField1.getText()); double c = (double)((f - 32)*(5.0/9.0)); jTextField2.setText(String.valueOf(Math.round(c))); } else if(val1.equals("Fahrenheit") && val2.equals("Fahrenheit")) { double f = Double.parseDouble(jTextField1.getText()); jTextField2.setText(String.valueOf(Math.round(f))); } } /** * @param args the command line arguments */ public static void main(String args[]) { try { for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(info.getName())) { javax.swing.UIManager.setLookAndFeel(info.getClassName()); break; } } } catch (ClassNotFoundException ex) { java.util.logging.Logger.getLogger(Temperature_converter.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(Temperature_converter.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(Temperature_converter.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(Temperature_converter.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new Temperature_converter().setVisible(true); } }); } }