jnumberfield.java

java编程开发技巧与实例的编译测试通过的所有例程

import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.GridLayout;

public class JNumberField extends JTextField
{
	public int getInteger()	throws NumberFormatException
	{
		return Integer.valueOf(getText()).intValue();
	}
	public double getDouble() throws NumberFormatException
	{
		return Double.valueOf(getText()).doubleValue();
	}
}