Java NetBeans Error

robfullam

Guys,

I'm fairly new to java and NetBeans especially. I'm trying to do a small Calculator GUI (Just Adding and subtracting Numbers) But i keep getting this error alongside 2 parts of my code.. (Highlighted in Red)

The Error says: Method getText in classs jLabel cannot be applied to given types;

required: no arguments
found: String
reason: actual and formal argument differ in length

Sorry if this is a simple fix, but its doing my head in knowing its probably something stupid i'm missing.

Thanks in advance for any help!

import javax.swing.JOptionPane;
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author Robert
 */
public class CalculatorForm extends javax.swing.JFrame {

    /**
     * Creates new form CalculatorForm
     */
    public CalculatorForm() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        firstNumberText = new javax.swing.JTextField();
        secondNumberText = new javax.swing.JTextField();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        plusButton = new javax.swing.JButton();
        minusButton = new javax.swing.JButton();
        answerLabel = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Simple Calculator");

        jLabel1.setText("First number");

        jLabel2.setText("Second number");

        plusButton.setText("+");
        plusButton.setToolTipText("Add");
        plusButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                plusButtonActionPerformed(evt);
            }
        });

        minusButton.setText("-");
        minusButton.setToolTipText("Subtract");
        minusButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                minusButtonActionPerformed(evt);
            }
        });

        answerLabel.setFont(new java.awt.Font("Script MT Bold", 0, 24)); // NOI18N
        answerLabel.setText("The Answer is:");
        answerLabel.setToolTipText("null");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(plusButton)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 109, Short.MAX_VALUE)
                        .addComponent(minusButton))
                    .addComponent(secondNumberText)
                    .addComponent(firstNumberText))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            .addGroup(layout.createSequentialGroup()
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(answerLabel, javax.swing.GroupLayout.PREFERRED_SIZE, 328, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel2)
                    .addComponent(jLabel1))
                .addContainerGap(54, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jLabel1)
                .addGap(13, 13, 13)
                .addComponent(firstNumberText, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(12, 12, 12)
                .addComponent(jLabel2)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(secondNumberText, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(33, 33, 33)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(plusButton)
                    .addComponent(minusButton))
                .addGap(34, 34, 34)
                .addComponent(answerLabel)
                .addContainerGap(71, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>

    private void plusButtonActionPerformed(java.awt.event.ActionEvent evt) {
        int number1, number2;

        try {
            number1 = Integer.parseInt(
                    this.firstNumberText.getText());
        } catch (Exception e) {
            JOptionPane.showMessageDialog(this, "Bad First Number", "ERROR", JOptionPane.ERROR_MESSAGE);
            return;
        }

        try {
            number2 = Integer.parseInt(
                    this.secondNumberText.getText());
        } catch (Exception e) {
            JOptionPane.showMessageDialog(this, "Bad Second Number", "ERROR", JOptionPane.ERROR_MESSAGE);
            return;
        }

        int answer = number1 + number2;
        [COLOR="red"]this.answerLabel.getText([/COLOR]
                "The answer is:  " + answer);
    
    }

    private void minusButtonActionPerformed(java.awt.event.ActionEvent evt) {
        int number1, number2;

        try {
            number1 = Integer.parseInt(
                    this.firstNumberText.getText());
        } catch (Exception e) {
            JOptionPane.showMessageDialog(this, "Bad First Number", "ERROR", JOptionPane.ERROR_MESSAGE);
            return;
        }

        try {
            number2 = Integer.parseInt(
                    this.secondNumberText.getText());
        } catch (Exception e) {
            JOptionPane.showMessageDialog(this, "Bad Second Number", "ERROR", JOptionPane.ERROR_MESSAGE);
            return;
        }

        int answer = number1 - number2;
       [COLOR="Red"] this.answerLabel.getText([/COLOR]
                "The answer is: " + answer );
    }

    
    
    
      
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        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(CalculatorForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(CalculatorForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(CalculatorForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(CalculatorForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new CalculatorForm().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JLabel answerLabel;
    private javax.swing.JTextField firstNumberText;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JButton minusButton;
    private javax.swing.JButton plusButton;
    private javax.swing.JTextField secondNumberText;
    // End of variables declaration
}

SilverScreen

Should you not be using this.answerLabel.setText("The answer is: " + answer ); to output the answer to the answerLabel?