How do I move the ActionListener from the current code into CenterPanel (out of ControlPanel)?

Please Help!

ControlPanel

import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.*;

public class ControlPanel extends JPanel implements ActionListener{

CenterPanel cp; TopPanel tp; group g1; public ControlPanel() { super(); BorderLayout border = new BorderLayout(); setLayout(border); setBackground(Color.gray); student st1 = new student("Joshua", "James", 23); student st2 = new student("Victoria", "Snyder", 32); student st3 = new student("Conner", "Smith", 25); student st4 = new student("Skyler", "Reese", 28); student[] students = {st1, st2, st3, st4}; g1 = new group("Nittany Lions"); g1.addStudents(students); cp = new CenterPanel(g1);

cp.jb1.addActionListener(this); cp.jb2.addActionListener(this); cp.jb3.addActionListener(this); cp.jb4.addActionListener(this); tp = new TopPanel(g1); add(tp, "North"); add(cp, "Center"); } @Override public void actionPerformed(ActionEvent e) { Object obj = e.getSource();

if (obj == cp.jb1) { cp.jb1.setText("Student gpa: " + g1.getStudentGPA(0)); tp.jb3.setText("" + g1.getAverageGPA()); } if (obj == cp.jb2) { cp.jb2.setText("Student gpa: " + g1.getStudentGPA(0)); tp.jb3.setText("" + g1.getAverageGPA()); } if (obj == cp.jb3) { cp.jb3.setText("Student gpa: " + g1.getStudentGPA(0)); tp.jb3.setText("" + g1.getAverageGPA()); } if (obj == cp.jb4) { cp.jb4.setText("Student gpa: " + g1.getStudentGPA(0)); tp.jb3.setText("" + g1.getAverageGPA()); } } }

CenterPanel

import java.awt.*; import javax.swing.*;

public class CenterPanel extends JPanel { JButton jb1, jb2, jb3, jb4; public CenterPanel(group g1) { super(); GridLayout grid = new GridLayout(4, 1); setLayout(grid); setBackground(Color.pink); jb1 = new JButton("Name = " + g1.students[0].getName() + " " + g1.students[0].myGPA); add(jb1); jb2 = new JButton("Name = " + g1.students[1].getName() + " " + g1.students[1].myGPA); add(jb2); jb3 = new JButton("Name = " + g1.students[2].getName() + " " + g1.students[2].myGPA); add(jb3); jb4 = new JButton("Name = " + g1.students[3].getName() + " " + g1.students[3].myGPA); add(jb4); } }

TopPanel

import java.awt.*; import javax.swing.*;

public class TopPanel extends JPanel { JButton jb1, jb2, jb3;

public TopPanel(group g1) { super(); setBackground(Color.blue); jb1 = new JButton(g1.groupName); jb2 = new JButton("Group Average: "); jb2.setBackground(Color.white); jb3 = new JButton("" + g1.getAverageGPA()); add(jb1); add(jb2); add(jb3); } }

MainFrame

import java.awt.*; import javax.swing.*;

public class MainFrame extends JFrame {

ControlPanel mjp;

public MainFrame() { super("Lab 06"); mjp = new ControlPanel(); getContentPane().add(mjp, "Center"); setDefaultCloseOperation(EXIT_ON_CLOSE); setSize(800, 480); setVisible(true); } }

student

import java.util.Random;

class student { String firstName; String lastName; int age; Random r = new Random(); double myGPA = 0 + (r.nextDouble() * 4.0);

student(String firstName, String lastName, int age) { this.firstName = firstName; this.lastName = lastName; this.age = age; this.myGPA = semesterGPA(); }

public String getName() { return this.firstName + " " + this.lastName; }

public String getInfo() { return "Name: " + this.firstName + " " + this.lastName + " " + "Age: " + this.age + " " + "GPA: " + this.myGPA; } public double semesterGPA() { this.myGPA = Math.round((this.r.nextDouble() * 4.0) * 10.0) /10.0; return myGPA; }

}

Group

public class group {

String groupName; double avgGPA = 0.0; group(String groupName) { this.groupName = groupName; } student[] students = new student[4];

public void addStudents(student[] students) { this.students[0] = students[0]; this.students[1] = students[1]; this.students[2] = students[2]; this.students[3] = students[3]; } public double getAverageGPA() { avgGPA = 0; for (student s : this.students) { this.avgGPA += s.myGPA; } return (Math.round((this.avgGPA/4.0) * 10.0) / 10.0); }

public double getStudentGPA (int index) { return (this.students[index].semesterGPA()); } }

app

public class app {

public static void main(String args[]) { MainFrame mjf = new MainFrame(); } }