Java课程设计-计算器

1、团队课程设计博客链接

http://www.cnblogs.com/yuanj/p/7072137.html

2.个人负责模块或任务说明

监听器的设置

3.自己的代码提交记录截图

//注册各个组件监听事件

	backspace.addMouseListener(new OperationMouseListener());

	CE.addMouseListener(new OperationMouseListener());

	C.addMouseListener(new OperationMouseListener());

	decimal.addMouseListener(new OperationMouseListener());

	equal.addMouseListener(new OperationMouseListener());

	neg.addMouseListener(new OperationMouseListener());

	//注册四则运算鼠标监听

	add.addMouseListener(new CalcMouseListener());

	sub.addMouseListener(new CalcMouseListener());

	mul.addMouseListener(new CalcMouseListener());

	div.addMouseListener(new CalcMouseListener());

	//注册数字监听事件

	zero.addMouseListener(new NumberMouseListener());

	one.addMouseListener(new NumberMouseListener());

	two.addMouseListener(new NumberMouseListener());

	three.addMouseListener(new NumberMouseListener());

	four.addMouseListener(new NumberMouseListener());

	five.addMouseListener(new NumberMouseListener());

	six.addMouseListener(new NumberMouseListener());

	seven.addMouseListener(new NumberMouseListener());

	eight.addMouseListener(new NumberMouseListener());

	nine.addMouseListener(new NumberMouseListener());

}

private class NumberMouseListener implements MouseListener{

	public void mouseClicked(MouseEvent e) {

		if(input.getText().trim().equals("0")){//如果文本框已经是0，结果还是0

			input.setText(((JButton)e.getSource()).getText().trim());

		}else{//否则的话，把0添加到后面，譬如文本框是1，结果就为10

			input.setText(input.getText().concat(((JButton)e.getSource()).getText().trim()));

		}

	}

	public void mouseEntered(MouseEvent e) {}

	public void mouseExited(MouseEvent e) {}

	public void mousePressed(MouseEvent e) {}

	public void mouseReleased(MouseEvent e) {}

}

private class CalcMouseListener implements MouseListener{

	//如果输入的是运算符号，保存第一个结果和运算符号

	public void mouseClicked(MouseEvent e) {

		num1 = input.getText().trim();

		input.setText("");

		operator = ((JButton)e.getSource()).getText().trim();

		input.setText(num1+operator);

	}

	public void mouseEntered(MouseEvent e) {}

	public void mouseExited(MouseEvent e) {}

	public void mousePressed(MouseEvent e) {}

	public void mouseReleased(MouseEvent e) {}

}

4、自己负责模块或任务详细说明

 设置监听器与字符运算符的判定存取。

5.课程设计感想

 通过课设，能初步掌握监听器的使用。

 发现自己不能很熟练的写出代码，应加强代码学习。