Is it possible to control instances like variables, jcomponents, timer in other external classes?
For example this is my Class1
public class Class1 extends JFrame {
JLabel lbl = new JLabel("Hello");
public Class1() {
super("Class1");
Container c = getContentPane();
setLayout(null);
c.add(lbl);
lbl.setBounds(0,0,100,20);
Class2.process();
setSize(200,100);
setLocationRelativeTo(null);
setVisible(true);
}
public static void main(String var[]) {
new Class1();
}
}
You can see there's Class2.process(); Here's the other class externally but in the same folder
public class Class2 {
public static void process() {
// I want to control lbl from Class1 class inside this method like
// lbl.setVisible(false);
}
public static void main(String args[]) {
//
}
}
Is it possible? Sorry. I can't find answers on other website.
You have to pass the instance of JLabel e.g.;
JLabel lbl = new JLabel("Hello"););
Class2.process(lbl);
public class Class2 {
public static void process(JLabel lbl) {
// I want to control lbl from Class1 class inside this method like
lbl.setVisible(false); // this will change your Class1 Jlabel
}