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。