diff --git a/src/java2020spring/Calculator0106.java b/src/java2020spring/Calculator0106.java
new file mode 100644
index 0000000000000000000000000000000000000000..ad315228555616ad1eb798adf6b675a431f85d77
--- /dev/null
+++ b/src/java2020spring/Calculator0106.java
@@ -0,0 +1,317 @@
+ 
+package java2020spring;
+
+import javax.swing.*;
+import javax.swing.border.Border;
+import javax.swing.text.JTextComponent;
+
+import java.awt.*; 
+	import java.awt.event.*;
+    import java.lang.*;
+	import java.lang.*; 
+	
+	@SuppressWarnings("unused")
+	public class Calculator0106 extends JFrame implements ActionListener 
+	{ 
+		 
+	private static final StringBuffer Formula = null;
+	private JPanel p1 = new JPanel(); 
+	private JPanel p2 = new JPanel(); 
+	private JTextField t1; //文本框1用来显示输入信息 
+	private JTextField t2; //文本框2用来显示结果信息 
+	private JLabel label; 
+	 StringBuffer str;  
+	 double x,y;  //x和y都是运算数 
+	 int z;   
+	  
+	  JButton n1,n2,n3,n4,n5,n6,n7,n8,n9,n0;
+	  JButton b1,b2, b3, b4, b5, b6, b7, b8, b9, b10,b11,b12,b13,b14,b15;//算术功能按钮 
+	
+	 @SuppressWarnings("null")
+	public Calculator0106 () 
+	 { 
+	 super("计算器"); //窗口名称 
+	 Container c = getContentPane(); //创建内容面板对象 
+	  
+	 t1 = new JTextField(30); 
+	 t1.setEditable(false);  //只能显示，不能编辑 
+	 t2 = new JTextField(30); 
+	 t2.setEditable(false); //只能显示，不能编辑 
+	 label = new JLabel("计算器"); 
+	 label.setForeground(Color.black); 
+	  
+	 //创建一个空字符串缓冲区 
+	 str=new StringBuffer(); 
+	
+	  
+	 p2.add(label); 
+	 p2.add(t2);  
+	 p2.add(t1); 
+	 p2.setLayout(new GridLayout(4,1)); 
+
+	 n1 =new JButton("1"); n2= new  JButton ("2");
+	 n3= new JButton("3"); n4= new JButton("4"); 
+	 n5= new JButton("5"); n6= new JButton("6"); 
+	 n7= new JButton("7"); n8= new JButton("8") ; 
+	 n9= new JButton("9"); n0= new JButton("0");
+	
+	 b1= new JButton("/"); 
+	 b3= new JButton("*");  
+	 b5= new JButton("+"); 
+	 b7= new JButton("-");  
+	 b9= new JButton("-/+"); 
+	 b2= new JButton("back"); 
+	 b4= new JButton("C"); 
+	 b6= new JButton("√") ;
+	 b8= new JButton("="); 
+	 b10=new JButton(".");
+	 b11=new JButton("sin");
+	 b12=new JButton("cos");
+	 b13=new JButton("tan");
+	 b14=new JButton("x^2");
+	 b15=new JButton("x^3");
+	 
+	 p1.add(n1); 
+	 p1.add(n2);
+	 p1.add(n3);
+	 p1.add(n4); 
+	 p1.add(n5); 
+	 p1.add(n6); 
+	 p1.add(n7); 
+	 p1.add(n8);
+	 p1.add(n9); 
+	 p1.add(n0); 
+	 
+	 b1.setForeground(Color.blue);
+	 b3.setForeground(Color.blue); 
+	 b5.setForeground(Color.blue); 
+	 b7.setForeground(Color.blue); 
+	 b4.setForeground(Color.blue); 
+	 b6.setForeground(Color.blue); 
+	 b8.setForeground(Color.red); 
+	 b2.setForeground(Color.blue);
+	 b9.setForeground(Color.blue);
+	 b10.setForeground(Color.blue);
+	 b11.setForeground(Color.blue);
+	 b12.setForeground(Color.blue);
+	 b13.setForeground(Color.blue);
+	 b14.setForeground(Color.blue);
+	 b15.setForeground(Color.blue);
+	 
+	 Container con=getContentPane();
+	 
+	 con.setBackground(new Color(0,173,232));
+	 p1.add(b1);
+     p1.add(b3);  
+     p1.add(b5);
+     p1.add(b7); 
+     p1.add(b9);
+     p1.add(b10);
+     p1.add(b6);
+     p1.add(b11);
+     p1.add(b12);
+     p1.add(b13);
+     p1.add(b2);
+     p1.add(b4);
+     p1.add(b14);
+     p1.add(b15);
+     p1.add(b8);
+     p1.setLayout(new GridLayout(5,4,4,3)); 
+	  
+	 //注册监听器 
+	 b9.addActionListener(this); b10.addActionListener(this); 
+	 b1.addActionListener(this); b2.addActionListener(this); 
+	 b3.addActionListener(this); b4.addActionListener(this); 
+	 b5.addActionListener(this); b6.addActionListener(this); 
+	 b7.addActionListener(this); b8.addActionListener(this); 
+	 b11.addActionListener(this); b12.addActionListener(this);
+	 b13.addActionListener(this); b14.addActionListener(this);
+	 b15.addActionListener(this);
+	 
+	 n0.addActionListener(this); n1.addActionListener(this); 
+	 n2.addActionListener(this); n3.addActionListener(this); 
+	 n4.addActionListener(this); n5.addActionListener(this); 
+	 n6.addActionListener(this); n7.addActionListener(this); 
+	 n8.addActionListener(this); n9.addActionListener(this); 
+	
+	 c.add(p2); 
+	 c.add(p1); 
+	 c.setLayout(new FlowLayout()); 
+	  
+	 setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); //设置窗口关闭动作 
+	 setVisible(true); //设置为可见 
+	 setSize(350,300); //设置窗口大小 
+	 setResizable(false);
+	 } 
+
+public static void main(String[] args)
+	 
+	 { Calculator0106 f = new Calculator0106(); } 
+	  
+	  
+//按钮的事件处理 
+public void actionPerformed(ActionEvent e) 
+{ 
+try
+{ 
+
+ if(e.getSource()==b9)//单击"+/-"选择输入的运算数是正数还是负数 
+{ 
+  x=Double.parseDouble(t1.getText().trim());//trim函数作用是去掉字符串中的空格 
+  t1.setText(""+(-x)); 
+  t1.setHorizontalAlignment(JTextField.RIGHT); 
+} 
+else if (e.getSource()==b5)//单击加号按钮获得x的值和z的值并清空y的值 
+{ 
+  x=Double.parseDouble(t1.getText().trim()); 
+  str.setLength(0); 
+  y=0d; 
+  z=0; 
+} 
+else if(e.getSource()==b7)//单击减号按钮获得x的值和z的值并清空y的值 
+{ 
+  x=Double.parseDouble(t1.getText().trim()); 
+  str.setLength(0); 
+  y=0d; 
+  z=1; 
+} 
+else if(e.getSource()==b3)//单击乘号按钮获得x的值和z的值并清空y的值 
+{ 
+  x=Double.parseDouble(t1.getText().trim()); 
+  str.setLength(0); 
+  y=0d; 
+  z=2; 
+} 
+else if(e.getSource()==b1)//单击除号按钮获得x的值和z的值并清空y的值 
+{ 
+  x=Double.parseDouble(t1.getText().trim()); 
+  str.setLength(0); 
+  y=0d; 
+  z=3; 
+} 
+else if(e.getSource()==b8)//单击等号按钮输出计算结果 
+{ 
+  str.setLength(0); 
+
+switch(z) 
+{ 
+case 0: t1.setText(""+(x+y)); t1.setHorizontalAlignment(JTextField.RIGHT);break; 
+case 1: t1.setText(""+(x-y)); t1.setHorizontalAlignment(JTextField.RIGHT);break; 
+case 2: t1.setText(""+(x*y)); t1.setHorizontalAlignment(JTextField.RIGHT);break; 
+case 3: t1.setText(""+(x/y)); t1.setHorizontalAlignment(JTextField.RIGHT);break; 
+} 
+} 
+ 
+else if(e.getSource()==b11) {  //添加三角函数sin事件处理
+   double i=Double.parseDouble( t1.getText());
+   t1.setText(String.valueOf(Math.sin(i)));
+   }
+else if(e.getSource()==b12) {  //添加三角函数cos事件处理
+  double i=Double.parseDouble(t1.getText());
+   t1.setText(String.valueOf(Math.cos(i)));
+   }
+else if(e.getSource()==b13) {  //添加三角函数tan事件处理
+   double i=Double.parseDouble(t1.getText());
+   t1.setText(String.valueOf(Math.tan(i)));
+   }
+else if(e.getSource()==b14) {  //添加平方事件处理
+   double i=Double.parseDouble(t1.getText());
+   t1.setText(String.valueOf(i*i));
+       }
+else if(e.getSource()==b15) {  //添加立方事件处理
+   double i=Double.parseDouble(t1.getText());
+   t1.setText(String.valueOf(i*i*i));
+       }
+    
+else if(e.getSource()==b4) //选择"C"清零 
+ { 
+   t1.setText("0"); //把文本框清零 
+   t1.setHorizontalAlignment(JTextField.RIGHT); //文本对齐右边 
+   str.setLength(0); //清空字符串缓冲区以准备接收新的输入运算数 
+ } 
+else if(e.getSource()==b10)//单击"."按钮输入小数 
+{ 
+if(t1.getText().trim().indexOf('.')!=-1)//判断字符串中是否已经包含了小数点 
+{ 
+} 
+else //如果没有小数点 
+{ 
+if(t1.getText().trim().equals("0"))//如果初时显示为0 
+{ 
+  t1.setText(str.append(e.getActionCommand()).toString()); 
+  t1.setHorizontalAlignment(JTextField.RIGHT); 
+} 
+else if(t1.getText().trim().equals(""))//如果初时显示为空则不做任何操作 
+{} 
+else
+{ 
+  t1.setText(str.append(e.getActionCommand()).toString()); 
+  t1.setHorizontalAlignment(JTextField.RIGHT); 
+} 
+
+} 
+y=0d; 
+} 
+
+else if(e.getSource()==b6) //求平方根 
+{ 
+  x=Double.parseDouble(t1.getText().trim()); 
+if(x<0) 
+{ 
+  t1.setText("数字格式异常"); 
+  t1.setHorizontalAlignment(JTextField.RIGHT); 
+} 
+else
+{ 
+  t1.setText(""+Math.sqrt(x)); 
+  t1.setHorizontalAlignment(JTextField.RIGHT); 
+} 
+  str.setLength(0); 
+  y=0d; 
+} 
+
+else
+{ 
+if(e.getSource()==n0)//如果选择的是"0"这个数字键 
+{ 
+if(t1.getText().trim().equals("0"))//如果显示屏显示的为零不做操作 
+{} 
+else
+  t1.setText(str.append(e.getActionCommand()).toString()); 
+  t1.setHorizontalAlignment(JTextField.RIGHT); 
+y=Double.parseDouble(t1.getText().trim()); 
+} 
+else if (e.getSource()==b2) //选择的是back键 
+{ 
+if(!t1.getText().trim().equals("0"))//如果显示屏显示的不是零 
+{ 
+if(str.length()!=1) 
+{ 
+  t1.setText(str.delete(str.length()-1,str.length()).toString());//可能抛出字符串越界异常 
+  t1.setHorizontalAlignment(JTextField.RIGHT); 
+} 
+else
+{ 
+  t1.setText("0"); t1.setHorizontalAlignment(JTextField.RIGHT); 
+  str.setLength(0); 
+} 
+} 
+  y=Double.parseDouble(t1.getText().trim()); 
+} 
+else
+{ 
+  t1.setText(str.append(e.getActionCommand()).toString()); 
+  t1.setHorizontalAlignment(JTextField.RIGHT); 
+  y=Double.parseDouble(t1.getText().trim()); 
+} 
+} 
+} 
+catch(NumberFormatException e1){ t1.setText("数字格式异常"); 
+  t1.setHorizontalAlignment(JTextField.RIGHT); } 
+
+catch(StringIndexOutOfBoundsException e1){t1.setText("字符串索引越界"); 
+  t1.setHorizontalAlignment(JTextField.RIGHT);} 
+} 
+
+
+}