java数字类型转换

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class Event_Exam extends Frame implements ActionListener{
    static Event_Exam mainFrame=new Event_Exam();
    static Label labl1,labl2;
    static Label showlb1=new Label("0");
    static Label showlb2=new Label("0.0");
    static TextField text1,text2;
public static void main(String []args){
mainFrame.setTitle("数字类型转换");
mainFrame.setSize(500,400);
Container container =mainFrame.getContentPane();
container.setLayout(new FlowLayout());

labl1=new Label("输入整型数");
container.add(labl1);
text1=new TextField("0",10);
text1.addActionListener(mainFrame);
container.add(text1);

labl2=new Label("输入浮点数");
container.add(labl2);
text2=new TextField("0.0",10);
text2.addActionListener(mainFrame);
container.add(text2);

showlb1.setForeground(Color.blue);
showlb1.setHorizontalTextPosition(SwingConstants.LEFT);