Javaラーニングノート(AWTコンポーネントのボタン)

言うまでもなく、ボタンが押されるとActionEventイベントが発生し、ActionListenerインタフェースでイベントの傍受と処理が必要になる.
次は料理の数字の大きさのゲームです

package frame;
import java.awt.event.*;
import java.awt.*;

class WindowButton extends Frame implements ActionListener{
	int number;
	Label  prompt = new Label("   ");
	TextField inputs = new TextField("   ");
	Button buttonGetNumber, buttonEnter;
	WindowButton(String str){
		super(str);
		setLayout(new FlowLayout());
		buttonGetNumber = new Button("        ");
		add(buttonGetNumber);
		prompt = new Label("         ", Label.CENTER);
		prompt.setBackground(Color.cyan);
		inputs = new TextField("0",10);
		add(prompt);
		add(inputs);
		buttonEnter = new Button("  ");
		add(buttonEnter);
		buttonEnter.addActionListener(this);
		buttonGetNumber.addActionListener(this);
		setBounds(100, 100, 150, 150);
		setVisible(true);
		validate();
	}
	
	public void actionPerformed(ActionEvent e) {
		if(e.getSource() == buttonGetNumber){
			number = (int) (Math.random() * 100) + 1;
			prompt.setText("      ");
		}else if(e.getSource() == buttonEnter){
			int guess = 0;
			try{
				guess = Integer.parseInt(inputs.getText());
				if(guess == number){
					prompt.setText("    ");
				}else if(guess > number){
					prompt.setText("    ");
				}else if(guess < number){
					prompt.setText("     ");
				}
			}catch (NumberFormatException event){
				prompt.setText("     ");
			}
		}
	}
}	
public class Fra{
	public static void main(String ars[]){
		WindowButton win = new WindowButton("  ");
	}
}