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POHow to get textbox value from other class?
 

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  1. POHow to get textbox value from other class?
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    <p>I have a problem regarding the JTextField, I always get a NullPointerException whenever i want to get the textfield value from my class Student and pass it to my other class which is class myAction what i want to happen is that after i clicked the button or Jbutton all the data in the textfield will be save to the array, and i already have an actionlistener to my button and create a class myAction.</p> <p>Here are my code: Student class(Main class)</p> <p>/*</p> <pre><code>package Student; import java.util.Scanner; import javax.swing.*; import java.awt.event.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class Student{ private static Scanner input = new Scanner(System.in); public String[] name = {"Lara", "Jerome", "Ferdie", "Jeffrey", "Eduard", "King"}; public int[] grade = new int[6]; JFrame frame; JLabel label1, label2, label3, label4, label5, label6; JPanel panel; public JTextField text1, text2, text3, text4, text5, text6; JButton button; public static void main(String[] args) { Student myStudent = new Student(); myStudent.Layout(); //myStudent. } public void GetValue() { grade[0] = Integer.parseInt(text1.getText()); grade[1] = Integer.parseInt(text2.getText()); grade[2] = Integer.parseInt(text3.getText()); grade[3] = Integer.parseInt(text4.getText()); grade[4] = Integer.parseInt(text5.getText()); grade[5] = Integer.parseInt(text6.getText()); for(int i = 0; i &lt; grade.length; i++) { System.out.println(grade[i]); } } public void Layout() { //Design Layout panel = new JPanel(); panel.setLayout(null); frame = new JFrame("Student Grades"); button = new JButton("Get Grade"); button.setBounds(50, 260, 200, 30); label1 = new JLabel("Your Grade: " + name[0]); label1.setBounds(10, 10, 150, 30); text1 = new JTextField(5); text1.setBounds(140, 15, 150, 20); label2 = new JLabel("Your Grade: " + name[1]); label2.setBounds(10, 50, 150, 30); text2 = new JTextField(5); text2.setBounds(140, 55, 150, 20); label3 = new JLabel("Your Grade: " + name[2]); label3.setBounds(10, 90, 150, 30); text3 = new JTextField(5); text3.setBounds(140, 95, 150, 20); label4 = new JLabel("Your Grade: " + name[3]); label4.setBounds(10, 130, 150, 30); text4 = new JTextField(5); text4.setBounds(140, 135, 150, 20); label5 = new JLabel("Your Grade: " + name[4]); label5.setBounds(10, 170, 150, 30); text5 = new JTextField(5); text5.setBounds(140, 175, 150, 20); label6 = new JLabel("Your Grade: " + name[5]); label6.setBounds(10,210, 150, 30); text6 = new JTextField(5); text6.setBounds(140, 215, 150, 20); frame.setSize(350, 350); frame.setVisible(true); panel.add(label1); panel.add(text1); panel.add(label2); panel.add(text2); panel.add(label3); panel.add(text3); panel.add(label4); panel.add(text4); panel.add(label5); panel.add(text5); panel.add(label6); panel.add(text6); panel.add(button); frame.add(panel); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); MyEvent myAction = new MyEvent(); button.addActionListener(myAction); } } and my class myAction(or actionlistener) class class MyEvent implements ActionListener { public void actionPerformed(ActionEvent e) { if(e.getActionCommand().equals("Get Grade")) { Student EventStudent = new Student(); EventStudent.GetValue(); } } } </code></pre> <p>*/ here are all my code hope you can help me.</p>
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