Java Swing: Calculate Two Number Appication Source Code

For developing the java Swing appication you can use Java IDE like NetBeans, Eclipse etc. If you use NetBeans(I'm currently use), In NetBeans select Java Appication project, then in the Project, Select New JFrame, then you can design your development, In this appication, i develop the interface using Netbeans.Create this Java Class and run in the Command Prompt.


3. CalculateNumbers.java

/**<br /> *<br /> * @author Bhathiya<br /> */<br />public class CalculateNumbers extends javax.swing.JFrame {<br /><br />    private static CalculateNumbers newForm=new CalculateNumbers();<br /><br />    /** Creates new form CalculateNumbers */<br />    public CalculateNumbers() {<br />        initComponents();<br />    }<br /><br />    /** This method is called from within the constructor to<br />     * initialize the form.<br />     * WARNING: Do NOT modify this code. The content of this method is<br />     * always regenerated by the Form Editor.<br />     */<br /><br />    //Auto generated Code By netBeans<br />    @SuppressWarnings("unchecked")<br />    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents<br />    private void initComponents() {<br /><br />        num1 = new javax.swing.JTextField();<br />        num2 = new javax.swing.JTextField();<br />        jLabel1 = new javax.swing.JLabel();<br />        jLabel2 = new javax.swing.JLabel();<br />        jLabel3 = new javax.swing.JLabel();<br />        result = new javax.swing.JLabel();<br />        jLabel4 = new javax.swing.JLabel();<br />        calculate = new javax.swing.JButton();<br />        close = new javax.swing.JButton();<br /><br />        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);<br /><br />        jLabel1.setText("Number 1");<br /><br />        jLabel2.setText("Number 2");<br /><br />        jLabel3.setText("Result ");<br /><br />        result.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N<br />        result.setForeground(new java.awt.Color(255, 0, 51));<br /><br />        jLabel4.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N<br />        jLabel4.setForeground(new java.awt.Color(0, 0, 255));<br />        jLabel4.setText("Calculate Numbers");<br /><br />        calculate.setText("Calculate");<br />        calculate.addActionListener(new java.awt.event.ActionListener() {<br />            public void actionPerformed(java.awt.event.ActionEvent evt) {<br />                calculateActionPerformed(evt);<br />            }<br />        });<br /><br />        close.setText("Close");<br />        close.addActionListener(new java.awt.event.ActionListener() {<br />            public void actionPerformed(java.awt.event.ActionEvent evt) {<br />                closeActionPerformed(evt);<br />            }<br />        });<br /><br />        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());<br />        getContentPane().setLayout(layout);<br />        layout.setHorizontalGroup(<br />            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)<br />            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()<br />                .addContainerGap(126, Short.MAX_VALUE)<br />                .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 181, javax.swing.GroupLayout.PREFERRED_SIZE)<br />                .addGap(72, 72, 72))<br />            .addGroup(layout.createSequentialGroup()<br />                .addGap(56, 56, 56)<br />                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)<br />                    .addGroup(layout.createSequentialGroup()<br />                        .addComponent(calculate, javax.swing.GroupLayout.PREFERRED_SIZE, 105, javax.swing.GroupLayout.PREFERRED_SIZE)<br />                        .addGap(65, 65, 65)<br />                        .addComponent(close, javax.swing.GroupLayout.PREFERRED_SIZE, 110, javax.swing.GroupLayout.PREFERRED_SIZE)<br />                        .addContainerGap())<br />                    .addGroup(layout.createSequentialGroup()<br />                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)<br />                            .addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, 179, Short.MAX_VALUE)<br />                            .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 85, javax.swing.GroupLayout.PREFERRED_SIZE)<br />                            .addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 89, javax.swing.GroupLayout.PREFERRED_SIZE))<br />                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)<br />                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)<br />                            .addComponent(result, javax.swing.GroupLayout.DEFAULT_SIZE, 112, Short.MAX_VALUE)<br />                            .addComponent(num2, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 112, Short.MAX_VALUE)<br />                            .addComponent(num1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 112, Short.MAX_VALUE))<br />                        .addGap(26, 26, 26))))<br />        );<br />        layout.setVerticalGroup(<br />            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)<br />            .addGroup(layout.createSequentialGroup()<br />                .addContainerGap()<br />                .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE)<br />                .addGap(32, 32, 32)<br />                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)<br />                    .addComponent(num1, javax.swing.GroupLayout.PREFERRED_SIZE, 29, javax.swing.GroupLayout.PREFERRED_SIZE)<br />                    .addComponent(jLabel1))<br />                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)<br />                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)<br />                    .addComponent(num2, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)<br />                    .addComponent(jLabel2))<br />                .addGap(18, 18, 18)<br />                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)<br />                    .addComponent(result, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)<br />                    .addComponent(jLabel3))<br />                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 25, Short.MAX_VALUE)<br />                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)<br />                    .addComponent(calculate)<br />                    .addComponent(close))<br />                .addGap(26, 26, 26))<br />        );<br /><br />        pack();<br />    }// </editor-fold>//GEN-END:initComponents<br /><br />    private void calculateActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_calculateActionPerformed<br />        // TODO add your handling code here:<br />        int number1=Integer.parseInt(num1.getText());<br />        int number2=Integer.parseInt(num2.getText());<br />        int total=number1+number2;<br />        result.setText(String.valueOf(total));<br />    }//GEN-LAST:event_calculateActionPerformed<br /><br />    private void closeActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_closeActionPerformed<br />        // TODO add your handling code here:<br />        System.exit(-1);<br />    }//GEN-LAST:event_closeActionPerformed<br />    <br />    //Main Method<br />    public static void main(String args[]) {<br />     newForm.setVisible(true);<br />   }<br /><br /><br />    // Variables declaration - do not modify//GEN-BEGIN:variables<br />    private javax.swing.JButton calculate;<br />    private javax.swing.JButton close;<br />    private javax.swing.JLabel jLabel1;<br />    private javax.swing.JLabel jLabel2;<br />    private javax.swing.JLabel jLabel3;<br />    private javax.swing.JLabel jLabel4;<br />    private javax.swing.JTextField num1;<br />    private javax.swing.JTextField num2;<br />    private javax.swing.JLabel result;<br />    // End of variables declaration//GEN-END:variables<br /><br />}<br /><br />