package?MyCounte;

import?java.awt.*;?
import?java.awt.event.*;?
//import?java.lang.*;?
import?javax.swing.*;?


public?class?MyCounter?extends?frame?{
	GridLayout?gl1gl2gl3;
	Panel?P0?P1?P2?P3;
	JTextField?tf1;
	TextField?tf2;
	Button?b0?b1?b2?b3?b4?b5?b6?b7?b8?b9?b10?b11?b12?b13?b14
			b15?b16?b17?b18?b19?b20?b21?b22?b23?b24?b25?b26;
	StringBuffer?str;
	double?xy;
	int?z;
	static?double?m;
	
	public?MyCounter（）?{
		gl1?=?new?GridLayout（1?4?10?0）;
		gl2?=?new?GridLayout（4?1?0?15）;
		gl3?=?new?GridLayout（4?5?10?15）;

		tf1?=?new?JTextField（27）;
		tf1.setHorizontalAlignment（JTextField.RIGHT）;
		tf1.setEnabled（false）;
		tf1.setText（“0“）;
		tf2?=?new?TextField（10）;
		tf2.setEditable（false）;

		b0?=?new?Button（“Backspace“