Question

q2: Write a public class named MythMouseListener that implements the Mouselistener interface. This class will have a public constructor that takes a JTextArea and a JLabel as parameters and stores these in instance variables. Override the mouseEntered method to . display the text from the JTextArea on the JLabel in all upper case letters. Then, override the mouseReleased method to display the text from the JTextArea on the JLabel in all lower case letters. The other three methods from the MouseListener interface can be .left empty q3: Create a public class named "Servant" with private instance variables "ill", "after" and "worldwide" each of type int. You may add any other methods and variables you'd like to this class. Outside of Servant Cin the Problem Set class) write a public static method named "sortServant" that takes an ArrayList of Servants as a parameter and returns void. This method will sort the input by the variable "worldwide" in decreasing order

Answer 1

Hello.....

I have a solution for you...

As per the check rules I can solve your first question ....

MythMouseListener.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class MythMouseListener extends JFrame implements MouseListener
{
JTextArea t1;
JLabel l1;
String s;
public MythMouseListener() // constructor method
{
setTitle("My Mouse Listener"); // setting title to the frame
setSize(420,220); // setting size of the frame
getContentPane().setBackground(Color.CYAN); // setting backgroung color
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLayout(null); // set no layout
// creating controls
t1=new JTextArea("Hello...How are you...?");  
l1=new JLabel("");
// setting bounds to the controls
l1.setBounds(20,20,300,50);
t1.setBounds(20,80,360,80);
// adding controls
add(l1);
add(t1);
// adding mouse listener on JTextArea
t1.addMouseListener(this);
setVisible(true); // make frame visible
}
// overriding all mouse listener methods
@Override
public void mousePressed(MouseEvent e)
{
// TODO Auto-generated method stub  
}
@Override
public void mouseReleased(MouseEvent e)
{
s=t1.getText().toLowerCase();
l1.setText(s);  
}
@Override
public void mouseEntered(MouseEvent e) // when mouse entered on jtextarea
{
s=t1.getText().toUpperCase(); // get data from jtextfield and make it in uppercase
l1.setText(s); // display uppercase string in jlabel
}

// I am doing this mouseExited method also because i think this is opposite operation of mouseEntered
// So if you want you can make this method empty
@Override
public void mouseExited(MouseEvent e)
{
s=t1.getText().toLowerCase(); / get data from jtextfield and make it in lowercase
l1.setText(s); // display lowercase string in jlabel
}
@Override
public void mouseClicked(MouseEvent e)
{
// TODO Auto-generated method stub  
}
public static void main(String args[])
{
new MythMouseListener(); // anonymous object of MythMouseListener class
}
}

Output

C:\Users\AKSHAY\Desktop>javac MythMouseListener.java

C:\Users\AKSHAY\Desktop>java MythMouseListener

1 My Mouse Listener HELLO.. .HOW ARE YOU...? Hello...How are you...?

My Mouse Listener hello..how are you.. Hello... How are you...?

Thank you...