diff --git a/collaboration/Calculator.java b/collaboration/Calculator.java
new file mode 100644
index 0000000..6ef9d9d
--- /dev/null
+++ b/collaboration/Calculator.java
@@ -0,0 +1,62 @@
+
+package collaboration;
+
+import java.util.Scanner;
+import java.math.*;
+
+public class Calculator {
+    public static void main(String[] args) 
+    {
+        Scanner sc=new Scanner(System.in);
+        double result=1.0;
+        String Command=sc.nextLine();
+        String parameters=sc.nextLine();
+        if(Command.equals("0"))
+            result=Calculator.Log(parameters);
+//        else if(Command.equals("1"))
+//            result=Calculator.ex(parameters);
+//        else if(Command.equals("2"))
+//            result=Calculator.jjcc(parameters);
+          else if(Command.equals("6"))
+        	  result=Calculator.sin(parameters);
+          else if(Command.equals("7"))
+        	  result=Calculator.cos(parameters);
+          else if(Command.equals("8"))
+        	  result=Calculator.tan(parameters);
+        System.out.println(result);
+        
+    }
+    public static double Log(String s)
+    {
+        String[] parameters=new String[2];
+        parameters=s.split(" ");
+        float a=Float.parseFloat(parameters[0]);
+        float b=Float.parseFloat(parameters[1]);
+        double result=Math.log(b)/Math.log(a);  
+        return result;
+    }
+    public static double sin(String s)
+    {
+       double x=Double.parseDouble(s);
+       return Math.sin(Math.toRadians(x));//Math.toRadians()将角度转换为弧度	   
+    }
+    public static double cos(String s)
+    {
+    	double x=Double.parseDouble(s); 
+        return Math.cos(Math.toRadians(x));
+    }
+    public static double tan(String s)
+    {
+    	double x=Double.parseDouble(s); 
+    	return Math.tan(Math.toRadians(x));
+    }
+    
+//    public static double jjcc()
+//    {
+//        
+//    }
+//    public static double ex()
+//    {
+//        
+//    }
+}
diff --git a/collaboration/ExFunction.java b/collaboration/ExFunction.java
new file mode 100644
index 0000000..f62cfbf
--- /dev/null
+++ b/collaboration/ExFunction.java
@@ -0,0 +1,19 @@
+package collaborative;
+
+/**
+ * @author suyi
+ * @version 1.0
+ * @date 2020/8/6 18:00
+ */
+public class ExFunction {
+    public double x;
+
+    public ExFunction(double x) {
+        this.x = x;
+    }
+
+    public double index() {
+        return Math.exp(x);
+    }
+
+}
diff --git a/collaboration/TrigonometricFunction.java b/collaboration/TrigonometricFunction.java
new file mode 100644
index 0000000..624c663
--- /dev/null
+++ b/collaboration/TrigonometricFunction.java
@@ -0,0 +1,32 @@
+package collaboration;
+
+import java.math.*;
+public class TrigonometricFunction {
+	
+	static double x;
+    public TrigonometricFunction (double x)
+    {
+    	this.x=x;
+    }
+	public static double sin( ) //计算角度x对应的正弦值
+	{
+		return Math.sin(Math.toRadians(x));//Math.toRadians()将角度转换为弧度
+		
+	}
+	public static double cos()//计算角度x对应的余弦值
+	{
+		return  Math.cos(Math.toRadians(x));
+	}
+	public static double tan()//计算角度x对应的正切值
+	{
+		return Math.tan(Math.toRadians(x));
+	}
+//	public static void main (String[] args)
+//	{
+//		double x=90;
+//		TrigonometricFunction t=new TrigonometricFunction(x);
+//		System.out.println(t.sin());
+//	}
+	
+}
+