Is it possible to convert from point to JButton in java, just as you convert from int to string .. Any help is acceptable, please I need help on it. Thanks!
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.*;
import java.awt.*;
@SuppressWarnings("serial")
public class Beginner extends JPanel {
static JButton quest;
Random rand = new Random();
int n = 10;
static List <Point> points = new ArrayList<Point> ();
public Beginner() {
int radius = 200;
Point center = new Point (250, 250);
double angle = Math.toRadians(360 / n);
points.add(center);
for (int i = 0; i < n; i++) {
double theta = i * angle;
int dx = (int) (radius * Math.sin(theta));
int dy = (int) (radius * Math.cos(theta));
Point p = new Point (center.x + dx , center.y + dy);
points.add(p);
}
draw (points);
}
public void draw (List<Point> points) {
JPanel panels = new JPanel();
SpringLayout spring = new SpringLayout();
int count = 1;
for (Point point: points) {
quest = new JButton("Question " + count);
quest.setForeground(Color.BLACK);
Font fonte = new Font("Script MT Bold", Font.PLAIN, 20);
quest.setFont(fonte);
add (quest);
count++;
spring.putConstraint(SpringLayout.WEST, quest, point.x, SpringLayout.WEST, panels );
spring.putConstraint(SpringLayout.NORTH, quest, point.y, SpringLayout.NORTH, panels );
setLayout(spring);
panels.setOpaque(false);
panels.setVisible(true);
panels.setLocation(5,5);
add(panels);
quest.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent p) {
JButton source = (JButton) p.getSource();
//where the problem lies
if (source.equals(points.get(0))) {
//some action....
}
}
});
}
}
public static void main(String [] args){
JFrame frame = new JFrame();
//set JFrame properties
JButton start = new JButton ("CLick here to start");
start.addActionListener(new ActionListener(){
public void actionPerformed (ActionEvent et) {
Beginner novice = new Beginner();
//set Beginner properties (remember it extends JPanel);
}
});
} }
Probbaly you will need to add the missing lines into your code just like this, I've just tested it and it works.
Point class from awt package.main method to execute your code by creating a new instance of the class.Also you need to extend the JFrame class to be able to call the setLayout and add methods.
package javaapplication6;
import java.awt.Color;
import java.awt.Font;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.SpringLayout;
import javax.swing.JFrame;
public class Beginner extends JFrame {
Random rand = new Random();
int n = 10;
static List<Point> points = new ArrayList<Point>();
public Beginner() {
int radius = 200;
Point center = new Point(250, 250);
double angle = Math.toRadians(360 / n);
points.add(center);
for (int i = 0; i < n; i++) {
double theta = i * angle;
int dx = (int) (radius * Math.sin(theta));
int dy = (int) (radius * Math.cos(theta));
Point p = new Point(center.x + dx, center.y + dy);
points.add(p);
}
draw(points);
}
public void draw(List<Point> points) {
JPanel panels = new JPanel();
SpringLayout spring = new SpringLayout();
int count = 1;
for (Point point : points) {
JButton quest = new JButton("Question " + count);
quest.setForeground(Color.BLACK);
Font fonte = new Font("Script MT Bold", Font.PLAIN, 20);
quest.setFont(fonte);
quest.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent et) {
System.out.println(quest.getText());
//do something else
}
});
add(quest);
spring.putConstraint(SpringLayout.WEST, quest, point.x, SpringLayout.WEST, panels);
spring.putConstraint(SpringLayout.NORTH, quest, point.y, SpringLayout.NORTH, panels);
setLayout(spring);
panels.setOpaque(false);
panels.setVisible(true);
panels.setLocation(5, 5);
add(panels);
count++;
}
setSize(700, 700);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
public static void main(String[] args) {
new Beginner();
}
}