A java applet shows how to create a text-area, a radio-button, a ordinary button.

Solution:
import  java.applet.Applet;
import  java.awt.Button;
import  java.awt.Checkbox;
import  java.awt.CheckboxGroup;
import  java.awt.TextField;
public  class  GuiApplet extends Applet
{
Button okButton;
TextField nameField;
CheckboxGroup  radioGroup;
Checkbox  radiol;
Checkbox  radio2;
Checkbox  option;
public  void  init()
{
setLayout(null);
okButton =  new Button("A button");
nameField =  new TextField("A TextField", 100) ,
radioGroup =  new  CheckboxGroup();
radiol=  new Checkbox("Radiol",  radioGroup,false);
radio2=  new Checkbox("Radio2",  radioGroup,true);
option=  new  Checkbox("Option",false);
okButton.setBounds(20,20,100,30);
nameField.setBounds(20,70,100,40);
radiol.setBounds(20,120,100,30);
radio2.setBounds(140,120,100,30); option.setBounds(20, 170,100,30) ; add(okButton);
add(nameField);
add(radiol);
add(radio2);
add(option);
}