Extending size of JFrame according to JTextArea

Java1.java

import javafx.scene.input.KeyCode;

import javax.swing.*;
import javax.xml.soap.Text;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.security.Key;

public class Test extends JFrame {

    JTextArea jTextArea;

    Test()
    {

        this.setSize(200,80);
        jTextArea=new JTextArea();

        this.add(jTextArea);

        jTextArea.addKeyListener(new KeyAdapter() {

            @Override
            public void keyPressed(KeyEvent e) {


                if(e.getKeyCode()==KeyEvent.VK_ENTER)
                {
                    Test.this.setSize(200,Test.this.getSize().height+jTextArea.getFont().getSize());
                }
            }

        });


        this.setVisible(true);

    }


    public static void main(String[] args){


        Test o=new Test();

    }


}