diff --git a/.settings/org.eclipse.core.resources.prefs b/.settings/org.eclipse.core.resources.prefs
new file mode 100644
index 0000000000000000000000000000000000000000..26438fe82384544487f2191aef49d4b0ef346eb7
--- /dev/null
+++ b/.settings/org.eclipse.core.resources.prefs
@@ -0,0 +1,2 @@
+eclipse.preferences.version=1
+encoding/README.md=UTF-8
diff --git a/src/java2020spring/CalcFrame.java b/src/java2020spring/CalcFrame.java
new file mode 100644
index 0000000000000000000000000000000000000000..1ff7e01160487bd27fb9c39ce6536a916dde08b5
--- /dev/null
+++ b/src/java2020spring/CalcFrame.java
@@ -0,0 +1,11 @@
+package java2020spring;
+
+import java.awt.*;
+import javax.swing.*;
+public class CalcFrame {
+	public static void main(String args[]) {
+		WindowActionEvent win=new WindowActionEvent();
+		win.setTitle("科学计算器");//标题
+		win.setBounds(400,150,790,680);//大小
+	}
+}
\ No newline at end of file
diff --git a/src/java2020spring/WindowActionEvent.java b/src/java2020spring/WindowActionEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..a236e45c5da3a1700a55efe474fc6f4547da5955
--- /dev/null
+++ b/src/java2020spring/WindowActionEvent.java
@@ -0,0 +1,617 @@
+package java2020spring;
+
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+import javax.swing.*;
+import javax.swing.border.LineBorder;
+public class WindowActionEvent extends JFrame {
+	String operator="=";//记录运算符
+	boolean ifResult=true,flag=false;//判断是否有结果
+	double result=0;//定义计算结果
+	JTextField showView;//文本框定义窗口显示框
+	//OperatorActionListen operatorAction=new OperatorActionListen();//运算符处理监视器
+	NumberActionListen numberAction=new NumberActionListen();//数字处理监视器
+	PointActionListen pointAction=new PointActionListen();//小数点监视器
+	SignActionListen signAction=new SignActionListen();//特殊运算符监视器
+	ClearActionListen clearAction=new ClearActionListen();//清除显示框监视器
+	
+	//窗口初始化操作
+	public WindowActionEvent() {
+		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//窗口关闭方式
+		setResizable(false);//不可改变窗口大小
+		setVisible(true);//窗口可见
+		setLayout(null);//空布局
+		
+	//窗口内添加计算器的显示框,用来显示输入数据和输出结果
+		showView = new JTextField(10);
+		showView.setBounds(15, 10, 745, 120);//显示框大小
+		showView.setEditable(false);//显示框只读
+		showView.setHorizontalAlignment(JTextField.RIGHT);//文字右对齐
+		showView.setBackground(Color.white);//设置背景色
+		showView.setFont(new Font("Cambria", Font.BOLD, 24));//设置字体 粗细 大小
+		add(showView);
+			
+	//添加按钮及相应的按钮初始化操作
+		JButton button_leftbracket1 = new JButton("(");//添加左括号
+		button_leftbracket1.setBounds(40,170,80,60);//设置按钮分布，大小
+		button_leftbracket1.setBorder(new LineBorder(Color.lightGray,1));//设置按钮边框颜色
+		button_leftbracket1.setFont(new Font("黑体", Font.PLAIN, 24));//设置字体 粗细 大小
+		button_leftbracket1.setBackground(Color.pink);//设置按钮背景颜色
+		button_leftbracket1.addActionListener(signAction);//添加事件处理
+		add(button_leftbracket1);//添加按钮
+		
+		JButton button_leftbracket2 = new JButton(")");//添加右括号
+		button_leftbracket2.setBounds(140,170,80,60);
+		button_leftbracket2.setBorder(new LineBorder(Color.lightGray,1));
+		button_leftbracket2.setFont(new Font("黑体", Font.PLAIN, 24));
+		button_leftbracket2.setBackground(Color.pink);
+		button_leftbracket2.addActionListener(signAction);
+		add(button_leftbracket2);
+		
+		JButton button_reciprocal = new JButton("1/x");//添加求倒数键
+		button_reciprocal.setBounds(240,170,80,60);
+		button_reciprocal.setBorder(new LineBorder(Color.lightGray,1));
+		button_reciprocal.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_reciprocal.setBackground(Color.orange);
+		button_reciprocal.addActionListener(signAction);
+		add(button_reciprocal);
+		
+		JButton button_mc = new JButton("mc");//添加mc键，用于清零之前存储的数字
+		button_mc.setBounds(340,170,80,60);
+		button_mc.setBorder(new LineBorder(Color.lightGray,1));
+		button_mc.setFont(new Font("黑体", Font.PLAIN, 24));
+		button_mc.setBackground(Color.gray);
+		//button_mc.addActionListener();
+		add(button_mc);
+		
+		JButton button_m1 = new JButton("m+");//添加m+键，存储内加上数字
+		button_m1.setBounds(440,170,80,60);
+		button_m1.setBorder(new LineBorder(Color.lightGray,1));
+		button_m1.setFont(new Font("黑体", Font.PLAIN, 24));
+		button_m1.setBackground(Color.gray);
+		//button_m1.addActionListener();
+		add(button_m1);
+		
+		JButton button_m2 = new JButton("m-");//添加m-键，存储内减去数字
+		button_m2.setBounds(540,170,80,60);
+		button_m2.setBorder(new LineBorder(Color.lightGray,1));
+		button_m2.setFont(new Font("黑体", Font.PLAIN, 24));
+		button_m2.setBackground(Color.gray);
+		//button_m2.addActionListener();
+		add(button_m2);
+		
+		JButton button_mr = new JButton("mr");//添加mr键，用于存储数字
+		button_mr.setBounds(640,170,80,60);
+		button_mr.setBorder(new LineBorder(Color.lightGray,1));
+		button_mr.setFont(new Font("黑体", Font.PLAIN, 24));
+		button_mr.setBackground(Color.gray);
+		//button_mr.addActionListener();
+		add(button_mr);
+		
+		JButton button_square = new JButton("x^2");//添加平方计算
+		button_square.setBounds(40,250,80,60);
+		button_square.setBorder(new LineBorder(Color.lightGray,1));
+		button_square.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_square.setBackground(Color.orange);
+		button_square.addActionListener(signAction);
+		add(button_square);
+		
+		JButton button_factorial = new JButton("x!");//添加阶乘计算
+		button_factorial.setBounds(40,330,80,60);
+		button_factorial.setBorder(new LineBorder(Color.lightGray,1));
+		button_factorial.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_factorial.setBackground(Color.orange);
+		button_factorial.addActionListener(signAction);
+		add(button_factorial);
+		
+		JButton button_e = new JButton("e");//添加自然常数e
+		button_e.setBounds(40,410,80,60);
+		button_e.setBorder(new LineBorder(Color.lightGray,1));
+		button_e.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_e.setBackground(Color.pink);
+		button_e.addActionListener(numberAction);
+		add(button_e);
+		
+		JButton button_sin = new JButton("sin");//添加三角函数sin
+		button_sin.setBounds(40,490,80,30);
+		button_sin.setBorder(new LineBorder(Color.lightGray,1));
+		button_sin.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_sin.setBackground(Color.green);
+		button_sin.addActionListener(signAction);
+		add(button_sin);
+		
+		JButton button_arcsin = new JButton("arcsin");//添加反三角函数arcsin
+		button_arcsin.setBounds(40,530,80,30);
+		button_arcsin.setBorder(new LineBorder(Color.lightGray,1));
+		button_arcsin.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_arcsin.setBackground(Color.green);
+		button_arcsin.addActionListener(signAction);
+		add(button_arcsin);
+		
+		JButton button_lnv = new JButton("lnv");//添加lnv键，用于改变sin,cos,tan改为对应的反函数的值
+		button_lnv.setBounds(40,570,80,60);
+		button_lnv.setBorder(new LineBorder(Color.lightGray,1));
+		button_lnv.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_lnv.setBackground(Color.green);
+		//button_lnv.addActionListener();
+		add(button_lnv);
+		
+		JButton button_thirdPower = new JButton("x^3");//添加立方计算
+		button_thirdPower.setBounds(140,250,80,60);
+		button_thirdPower.setBorder(new LineBorder(Color.lightGray,1));
+		button_thirdPower.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_thirdPower.setBackground(Color.orange);
+		button_thirdPower.addActionListener(signAction);
+		add(button_thirdPower);
+		
+		JButton button_radical1 = new JButton("√");//添加开平方计算
+		button_radical1.setBounds(140,330,80,60);
+		button_radical1.setBorder(new LineBorder(Color.lightGray,1));
+		button_radical1.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_radical1.setBackground(Color.orange);
+		button_radical1.addActionListener(signAction);
+		add(button_radical1);
+		
+		JButton button_ln = new JButton("ln");//添加对数ln计算
+		button_ln.setBounds(140,410,80,60);
+		button_ln.setBorder(new LineBorder(Color.lightGray,1));
+		button_ln.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_ln.setBackground(Color.orange);
+		button_ln.addActionListener(signAction);
+		add(button_ln);
+		
+		JButton button_cos = new JButton("cos");//添加三角函数cos
+		button_cos.setBounds(140,490,80,30);		
+		button_cos.setBorder(new LineBorder(Color.lightGray,1));
+		button_cos.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_cos.setBackground(Color.green);
+		button_cos.addActionListener(signAction);
+		add(button_cos);
+		
+		JButton button_arccos = new JButton("arccos");//添加反三角函数arccos
+		button_arccos.setBounds(140,530,80,30);
+		button_arccos.setBorder(new LineBorder(Color.lightGray,1));
+		button_arccos.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_arccos.setBackground(Color.green);
+		button_arccos.addActionListener(signAction);
+		add(button_arccos);
+		
+		JButton button_Deg = new JButton("Deg");//添加角度制计算方式
+		button_Deg.setBounds(140,570,80,60);
+		button_Deg.setBorder(new LineBorder(Color.lightGray,1));
+		button_Deg.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_Deg.setBackground(Color.yellow);
+		button_Deg.addActionListener(signAction);
+		add(button_Deg);
+		
+		JButton button_Power = new JButton("x^y");//添加指数计算
+		button_Power.setBounds(240,250,80,60);
+		button_Power.setBorder(new LineBorder(Color.lightGray,1));
+		button_Power.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_Power.setBackground(Color.orange);
+		button_Power.addActionListener(signAction);
+		add(button_Power);
+		
+		JButton button_radical2 = new JButton("y√x");//添加根号计算
+		button_radical2.setBounds(240,330,80,60);
+		button_radical2.setBorder(new LineBorder(Color.lightGray,1));
+		button_radical2.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_radical2.setBackground(Color.orange);
+		button_radical2.addActionListener(signAction);
+		add(button_radical2);
+		
+		JButton button_log = new JButton("logx(y)");//添加对数log计算,以x为底计算y的导数
+		button_log.setBounds(240,410,80,60);
+		button_log.setBorder(new LineBorder(Color.lightGray,1));
+		button_log.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_log.setBackground(Color.orange);
+		button_log.addActionListener(signAction);
+		add(button_log);
+		
+		JButton button_tan = new JButton("tan");//添加三角函数tan
+		button_tan.setBounds(240,490,80,30);		
+		button_tan.setBorder(new LineBorder(Color.lightGray,1));
+		button_tan.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_tan.setBackground(Color.green);
+		button_tan.addActionListener(signAction);
+		add(button_tan);
+		
+		JButton button_arctan = new JButton("arctan");//添加三角函数arctan
+		button_arctan.setBounds(240,530,80,30);		
+		button_arctan.setBorder(new LineBorder(Color.lightGray,1));
+		button_arctan.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_arctan.setBackground(Color.green);
+		button_arctan.addActionListener(signAction);
+		add(button_arctan);
+		
+		JButton button_Π = new JButton("Π");//添加圆周率Π
+		button_Π.setBounds(240,570,80,60);
+		button_Π.setBorder(new LineBorder(Color.lightGray,1));
+		button_Π.setFont(new Font("宋体", Font.PLAIN, 22));
+		button_Π.setBackground(Color.pink);
+		button_Π.addActionListener(numberAction);
+		add(button_Π);
+		
+		JButton button_C = new JButton("C");//添加C键，用于清空显示框的数字
+		button_C.setBounds(340,250,80,60);
+		button_C.setBorder(new LineBorder(Color.lightGray,1));
+		button_C.setBackground(Color.green);
+		button_C.setForeground(Color.blue);
+		button_C.setFont(new Font("黑体", Font.BOLD, 24));
+		button_C.addActionListener(clearAction);
+		add(button_C);
+		
+		JButton button_7 = new JButton("7");//添加数字7
+		button_7.setBounds(340,330,80,60);
+		button_7.setBorder(new LineBorder(Color.lightGray,1));
+		button_7.setBackground(Color.red);
+		button_7.setForeground(Color.black);
+		button_7.setFont(new Font("黑体", Font.BOLD, 30));
+		button_7.addActionListener(numberAction);
+		add(button_7);
+		
+		JButton button_4 = new JButton("4");//添加数字4
+		button_4.setBounds(340,410,80,60);
+		button_4.setBorder(new LineBorder(Color.lightGray,1));
+		button_4.setBackground(Color.red);
+		button_4.setForeground(Color.black);
+		button_4.setFont(new Font("黑体", Font.BOLD, 30));
+		button_4.addActionListener(numberAction);
+		add(button_4);
+		
+		JButton button_1 = new JButton("1");//添加数字1
+		button_1.setBounds(340,490,80,60);		
+		button_1.setBorder(new LineBorder(Color.lightGray,1));
+		button_1.setBackground(Color.red);
+		button_1.setForeground(Color.black);
+		button_1.setFont(new Font("黑体", Font.BOLD, 30));
+		button_1.addActionListener(numberAction);
+		add(button_1);
+		
+		JButton button_percentage = new JButton("%");//添加百分号
+		button_percentage.setBounds(340,570,80,60);
+		button_percentage.setBorder(new LineBorder(Color.lightGray,1));
+		button_percentage.setFont(new Font("宋体", Font.PLAIN, 24));
+		button_percentage.setBackground(Color.CYAN);
+		button_percentage.setForeground(Color.red);
+		button_percentage.addActionListener(signAction);
+		add(button_percentage);
+		
+		JButton button_divide = new JButton("÷");//添加除法运算
+		button_divide.setBounds(440,250,80,60);
+		button_divide.setBorder(new LineBorder(Color.lightGray,1));
+		button_divide.setBackground(Color.yellow);
+		button_divide.setForeground(Color.black);
+		button_divide.setFont(new Font("黑体", Font.BOLD, 30));
+		button_divide.addActionListener(signAction);
+		add(button_divide);
+		
+		JButton button_8 = new JButton("8");//添加数字8
+		button_8.setBounds(440,330,80,60);
+		button_8.setBorder(new LineBorder(Color.lightGray,1));
+		button_8.setBackground(Color.red);
+		button_8.setForeground(Color.black);
+		button_8.setFont(new Font("黑体", Font.BOLD, 30));
+		button_8.addActionListener(numberAction);
+		add(button_8);
+		
+		JButton button_5 = new JButton("5");//添加数字5
+		button_5.setBounds(440,410,80,60);
+		button_5.setBorder(new LineBorder(Color.lightGray,1));
+		button_5.setBackground(Color.red);
+		button_5.setForeground(Color.black);
+		button_5.setFont(new Font("黑体", Font.BOLD, 30));
+		button_5.addActionListener(numberAction);
+		add(button_5);
+		
+		JButton button_2 = new JButton("2");//添加数字2
+		button_2.setBounds(440,490,80,60);		
+		button_2.setBorder(new LineBorder(Color.lightGray,1));
+		button_2.setBackground(Color.red);
+		button_2.setForeground(Color.black);
+		button_2.setFont(new Font("黑体", Font.BOLD, 30));
+		button_2.addActionListener(numberAction);
+		add(button_2);
+		
+		JButton button_0 = new JButton("0");//添加数字0
+		button_0.setBounds(440,570,80,60);
+		button_0.setBorder(new LineBorder(Color.lightGray,1));
+		button_0.setBackground(Color.red);
+		button_0.setForeground(Color.black);
+		button_0.setFont(new Font("黑体", Font.BOLD, 30));
+		button_0.addActionListener(numberAction);
+		add(button_0);
+		
+		JButton button_multiply = new JButton("×");//添加乘法运算
+		button_multiply.setBounds(540,250,80,60);
+		button_multiply.setBorder(new LineBorder(Color.lightGray,1));
+		button_multiply.setBackground(Color.yellow);
+		button_multiply.setForeground(Color.black);
+		button_multiply.setFont(new Font("黑体", Font.BOLD, 30));
+		button_multiply.addActionListener(signAction);
+		add(button_multiply);
+		
+		JButton button_9 = new JButton("9");//添加数字9
+		button_9.setBounds(540,330,80,60);
+		button_9.setBorder(new LineBorder(Color.lightGray,1));
+		button_9.setBackground(Color.red);
+		button_9.setForeground(Color.black);
+		button_9.setFont(new Font("黑体", Font.BOLD, 30));
+		button_9.addActionListener(numberAction);
+		add(button_9);
+		
+		JButton button_6 = new JButton("6");//添加数字6
+		button_6.setBounds(540,410,80,60);
+		button_6.setBorder(new LineBorder(Color.lightGray,1));
+		button_6.setBackground(Color.red);
+		button_6.setForeground(Color.black);
+		button_6.setFont(new Font("黑体", Font.BOLD, 30));
+		button_6.addActionListener(numberAction);
+		add(button_6);
+		
+		JButton button_3 = new JButton("3");//添加数字3
+		button_3.setBounds(540,490,80,60);		
+		button_3.setBorder(new LineBorder(Color.lightGray,1));
+		button_3.setBackground(Color.red);
+		button_3.setForeground(Color.black);
+		button_3.setFont(new Font("黑体", Font.BOLD, 30));
+		button_3.addActionListener(numberAction);
+		add(button_3);
+		
+		JButton button_point = new JButton(".");//添加小数点
+		button_point.setBounds(540,570,80,60);
+		button_point.setBorder(new LineBorder(Color.lightGray,1));
+		button_point.setFont(new Font("宋体", Font.PLAIN, 28));
+		button_point.setBackground(Color.CYAN);
+		button_point.setForeground(Color.red);
+		button_point.addActionListener(pointAction);
+		add(button_point);
+		
+		JButton button_delete = new JButton("Delete");//添加删除键，用于删除刚输入的数字（退一格）
+		button_delete.setBounds(640,250,80,60);
+		button_delete.setBorder(new LineBorder(Color.lightGray,1));
+		button_delete.setBackground(Color.black);
+		button_delete.setForeground(Color.yellow);
+		button_delete.setFont(new Font("黑体", Font.BOLD, 22));
+		button_delete.addActionListener(clearAction);
+		add(button_delete);
+		
+		JButton button_subtract = new JButton("-");//添加减法运算
+		button_subtract.setBounds(640,330,80,60);
+		button_subtract.setBorder(new LineBorder(Color.lightGray,1));
+		button_subtract.setBackground(Color.yellow);
+		button_subtract.setForeground(Color.black);
+		button_subtract.setFont(new Font("黑体", Font.BOLD, 30));
+		button_subtract.addActionListener(signAction);
+		add(button_subtract);
+		
+		JButton button_plus = new JButton("+");//添加加法运算
+		button_plus.setBounds(640,410,80,60);		
+		button_plus.setBorder(new LineBorder(Color.lightGray,1));
+		button_plus.setBackground(Color.yellow);
+		button_plus.setForeground(Color.black);
+		button_plus.setFont(new Font("黑体", Font.BOLD, 30));
+		button_plus.addActionListener(signAction);
+		add(button_plus);
+		
+		JButton button_equal = new JButton("=");//添加等号，用于计算结果
+		button_equal.setBounds(640,490,80,140);
+		button_equal.setBorder(new LineBorder(Color.lightGray,1));
+		button_equal.setBackground(Color.blue);
+		button_equal.setForeground(Color.white);
+		button_equal.setFont(new Font("黑体", Font.BOLD, 30));
+		button_equal.addActionListener(signAction);
+		add(button_equal);
+		
+		
+	}
+	//数字输入监听器
+		class NumberActionListen implements ActionListener {
+		 	public void actionPerformed(ActionEvent e) {
+		 		String str=e.getActionCommand();//得到数字字符串
+		 		if(ifResult) {
+		 			showView.setText("");
+		 			ifResult=false;
+		 		}
+		 		if(str=="Π") {     //添加圆周率
+		 			showView.setText(String.valueOf(Math.PI));
+		 		}
+		 		else if(str=="e") { //添加自然常数
+		 			showView.setText(String.valueOf(Math.E));
+		 		}
+		 		else {
+		 			showView.setText(showView.getText().trim()+str);//显示框显示输入数字
+		 			if(showView.getText().contentEquals("0")) { //防止有效数字出现前出现多个零
+		 				showView.setText("0");
+		 				ifResult=true;
+		 				flag=true;
+		 			}
+		 		}
+		 	}
+		}
+		
+		//小数点输入监听器
+		class PointActionListen implements ActionListener{
+			public void actionPerformed(ActionEvent e) {
+				ifResult=false;
+				if(showView.getText().trim().indexOf(".")==-1) {//去两端空格得小数点
+					showView.setText(showView.getText()+".");
+				}
+			}
+		}
+		
+		//加减乘除、x^y、y√x、logx(y)操作
+		void getResult(double x) {
+			if(operator=="+") {     //定义加法计算方法
+				result+=x;
+			}
+			else if(operator=="-") {  //定义减法计算方法
+				result-=x;
+			}
+			else if(operator=="×") {  //定义乘法计算方法
+				result*=x;
+			}
+			else if(operator=="÷") {  //定义除法计算方法
+				result/=x;
+			}
+			else if(operator=="=") {  //定义等号结果计算方法
+				result=x;
+			}
+			else if(operator=="x^y") {  //定义x的y次方计算方法
+				result=Math.pow(result, x);
+			}
+			else if(operator=="y√x") {  //定义x的开y次方根计算方法
+				result=Math.pow(result,1d/x);
+			}
+			else if(operator=="logx(y)") {  //定义以x为底y的对数计算方法
+				if(x>0) {
+					result=Math.log(x)/Math.log(result);
+				}
+				else {
+					showView.setText("出错");
+				}
+			}
+			String strresult=String.valueOf(result);
+			showView.setText(strresult);    //显示结果
+		}
+		
+		//运算符号的监听器
+		class SignActionListen implements ActionListener{
+			public void actionPerformed(ActionEvent e) {
+				String str=e.getActionCommand();
+				if(str.equals("(")) {  //添加左括号事件处理
+					showView.setText("(");
+				}
+				else if(str.equals(")")) {  //添加右括号事件处理
+					showView.setText(")");
+				}
+				else if(str.equals("1/x")) {  //添加倒数事件处理
+					if(Double.parseDouble(showView.getText())==0) {
+						showView.setText("出错");
+					}
+					else {
+						showView.setText(String.valueOf(1/Double.parseDouble(showView.getText())));
+					}
+			}
+				else if(str.equals("x^2")) {  //添加平方事件处理
+					double i=Double.parseDouble(showView.getText());
+					showView.setText(String.valueOf(i*i));
+				}
+				else if(str.equals("x^3")) {  //添加立方事件处理
+					double i=Double.parseDouble(showView.getText());
+					showView.setText(String.valueOf(i*i*i));
+				}
+				else if(str.equals("x!")) {  //添加阶乘事件处理
+					double i=Double.parseDouble(showView.getText());
+					if((i%2==0)||(i%2==1)) {
+						int j=(int) i ;
+						int result=1;
+						for(int k=1;k<=j;k++)
+							result *=k;
+						showView.setText(String.valueOf(result));
+					}
+					else {
+						showView.setText("出错");
+					}
+				}
+				else if(str.equals("√")) {  //添加根号事件处理
+						double i=Double.parseDouble(showView.getText());
+						if(i>=0) {
+							showView.setText(String.valueOf(Math.sqrt(i)));
+						}
+						else {
+							showView.setText("出错");
+						}
+					}
+				else if(str.equals("ln")) {  //添加以e为底求对数事件处理
+					double i=Double.parseDouble(showView.getText());
+					if(i>0) {
+						showView.setText(String.valueOf(Math.log(i)));
+					}
+					else {
+						showView.setText("出错");
+					}
+				}
+				else if(str.equals("sin")) {  //添加三角函数sin事件处理
+					double i=Double.parseDouble(showView.getText());
+					showView.setText(String.valueOf(Math.sin(i)));
+				}
+				else if(str.equals("cos")) {  //添加三角函数cos事件处理
+					double i=Double.parseDouble(showView.getText());
+					showView.setText(String.valueOf(Math.cos(i)));
+				}
+				else if(str.equals("tan")) {  //添加三角函数tan事件处理
+					double i=Double.parseDouble(showView.getText());
+					showView.setText(String.valueOf(Math.tan(i)));
+				}
+				else if(str.equals("%")) { //添加百分号事件处理
+					showView.setText(String.valueOf(Double.parseDouble(showView.getText())/100));
+				}
+				else if(str.equals("Deg")) { //添加角度制事件处理
+					double i=Double.parseDouble(showView.getText());
+					showView.setText(String.valueOf(i/180*Math.PI)); 
+				}
+				/*else if(str.equals("lnv")) {  //求对应三角函数的反函数结果		
+		};*/
+				else if(str.equals("arcsin")) {  //添加三角函数arcsin事件处理
+					double i=Double.parseDouble(showView.getText());
+					showView.setText(String.valueOf(Math.asin(i)));
+				}
+				else if(str.equals("arccos")) {  //添加三角函数arccos事件处理
+					double i=Double.parseDouble(showView.getText());
+					showView.setText(String.valueOf(Math.acos(i)));
+				}
+				else if(str.equals("arctan")) {  //添加三角函数arctan事件处理
+					double i=Double.parseDouble(showView.getText());
+					showView.setText(String.valueOf(Math.atan(i)));
+				}
+				else { //执行加减乘除、x^y、y√x、logx(y)操作
+					if(flag) {
+						ifResult=false;
+					}
+					if(ifResult) {
+						operator=str;
+					}
+					else {
+						getResult(Double.parseDouble(showView.getText()));
+						operator=str;
+						ifResult=true;
+					}
+				}
+			}
+		}
+		
+		//清除显示框事件监视器
+		class ClearActionListen implements ActionListener{
+			public void actionPerformed(ActionEvent e) {
+				String str=e.getActionCommand();
+				if(str=="C") { //添加C清除键事件处理
+					showView.setText("0");
+					ifResult=true;
+					result=0;
+				}
+				else if(str=="Delete") { //添加Delete删除键事件处理
+					if(Double.parseDouble(showView.getText())>0) {
+						if(showView.getText().length()>1) {
+							showView.setText(showView.getText().substring(0,showView.getText().length()-1));
+						}
+						else {
+							showView.setText("0");
+							ifResult=true;
+						}
+					}
+					else {
+						if(showView.getText().length()>2) {
+							showView.setText(showView.getText().substring(0,showView.getText().length()-1));
+						}
+						else {
+							showView.setText("0");
+							ifResult=true;
+						}
+					}
+				}
+			}
+		}
+}