diff --git a/Main.java b/Main.java
new file mode 100644
index 0000000..9c22180
--- /dev/null
+++ b/Main.java
@@ -0,0 +1,92 @@
+/**
+ * @Filename - Main.java
+ * @Description - Entry point of the application
+ * @Author - Aditi Agrawal
+ */
+import java.util.Arrays;
+import java.util.Scanner;
+
+
+public class Main {
+   public static void main(String [] args){
+		
+		 Scanner sc = new Scanner(System.in);
+        System.out.println("Enter a string to perform operations");
+        String original = sc.nextLine();
+        MyString obj = new MyString(original);
+		
+		
+		 while(true) {
+            System.out.println("Select the operation you want to perform");
+            String[] arr = {"Exit()","append()", "countWords()", "replace()", "isPalindrome()", "splice()", "split()", "maxRepeat()", "sort()", "shift()", "reverse()"};
+            for (int i = 0; i < arr.length; i++) {
+                System.out.println(i + "->" + arr[i]);
+            }
+			
+            int choice = sc.nextInt();
+			sc.nextLine(); 
+            if(choice == 0){
+                System.out.println("Exit");
+                break;
+            }
+            switch (choice) {
+                case 1:
+                    System.out.println("Enter string to append");
+                    String temp = sc.nextLine();
+                    System.out.println("Output:");
+                    System.out.println(obj.appendstrings(temp));
+                    break;
+                case 2:
+                    System.out.println("Output:");
+                    System.out.println(obj.countwords());
+                    break;
+                case 3:
+                    System.out.println("Enter the character you want to replace");
+                    char first = sc.nextLine().charAt(0);
+                    System.out.println("Enter the character you want to replace with:-"+first);
+                    char second = sc.nextLine().charAt(0);
+                    System.out.println("Output:");
+                    System.out.println(obj.replace(first,second));
+                    break;
+                case 4:
+                    System.out.println("Output:");
+                    System.out.println(obj.isPalindrome());
+                    break;
+                case 5:
+                    
+                    System.out.println("Enter start index to remove from");
+
+                    int starts = sc.nextInt();
+                    sc.nextLine();
+                    System.out.println("Enter length to remove");
+                    int lengths = sc.nextInt();
+					System.out.println("Output:");
+                    System.out.println(obj.splice(starts, lengths));
+                    break;
+                case 6:
+                    System.out.println("Output:");
+                    System.out.println(Arrays.toString(obj.split()));
+                    break;
+                case 7:
+                    System.out.println("Output:");
+                    System.out.println(obj.maxrepeat());
+                    break;
+                case 8:
+                   System.out.println("Output:");
+                    System.out.println(obj.sorting());
+                    break;
+                case 9:
+                    System.out.println("Enter number of characters you want to shift");
+                    int place = sc.nextInt();
+                    System.out.println("Output:");
+                    System.out.println(obj.shift(place));
+                    break;
+                case 10:
+					System.out.println("Output:");
+                    System.out.println(obj.reverse());
+                    break;
+            }
+			System.out.println("----------------------------------------------------------------------------");
+        }
+    }
+}
\ No newline at end of file
diff --git a/MyString.java b/MyString.java
new file mode 100644
index 0000000..183c86a
--- /dev/null
+++ b/MyString.java
@@ -0,0 +1,199 @@
+/**
+ *@filename - MyString.java
+ *@description - This will perform most of the string operations
+ *@author - Aditi Agrawal
+*/
+
+import java.util.Arrays;
+
+public class MyString{
+	
+		String original;
+		MyString(String original){
+			this.original=original;
+		}
+		
+		
+	//append
+	String appendstrings(String st){
+		original=original+st;
+		return original;
+	}
+	
+	
+
+	
+	//countwords
+	int countwords(){
+		if(original.length()==0){
+			return 0;
+		}
+		boolean isword=false;
+		int count=0;
+		for(int i=0;i<original.length();i++){
+			isword=(original.charAt(i)!=' ');
+			if(isword ==true && (i==0 || original.charAt(i-1)==' ')){
+				count++;
+			}
+		}
+		
+		return count;
+	}
+	
+	
+	//replace
+	String replace(char a, char b){
+		char[] chararray=original.toCharArray();
+		for(int i=0;i<original.length();i++){
+			if(chararray[i]==a){
+				chararray[i]=b;
+			}
+		}
+		original=new String(chararray);
+		return original;
+		
+	}
+	
+	
+	//check palindrome
+	 boolean isPalindrome(){
+            int i=0;
+            int j=original.length()-1;
+            while(i<j){
+                if(original.charAt(i)!=original.charAt(j)){
+					return false;
+					}
+                i++;
+                j--;
+            }
+            return true;
+        }
+		
+		
+		//splice
+		String splice(int start,int length){
+            if(start<0 || start>original.length() || length<=0){
+				return original;
+			}
+			
+            String temp="";
+			for(int i=0;i<original.length();i++){
+				if(i>=start && i<length+start){
+					continue;
+				}
+				else{
+					temp+=original.charAt(i);
+				}
+			}
+			
+			original = temp;
+			return original;
+
+        }
+	
+	
+			//split
+		  String[] split(){
+            int size = countwords();
+            String[] arr = new String[size];
+            int i=0;
+            int arrayindex=0;
+            while(i<original.length()){
+                while (i<original.length() && original.charAt(i)==' ')i++;
+                if(i>=original.length())break;
+                int j=i;
+                while(j<original.length() && original.charAt(j)!=' ')j++;
+                arr[arrayindex]=original.substring(i,j);
+				arrayindex++;
+                i=j+1;
+            }
+
+            return arr;
+        }
+		
+		
+			//sort
+			 String sorting() {
+			String temp = original.toLowerCase();
+			int[] freq = new int[26];
+			
+			
+			for (int i = 0; i < temp.length(); i++) {
+				char ch = temp.charAt(i);
+					if (ch >= 'a' && ch <= 'z') {
+						freq[ch - 'a']++;
+					}
+			}
+	
+			StringBuilder sb = new StringBuilder();
+			for (int i=0;i<26;i++) {
+				for (int j=0;j<freq[i];j++) { 
+				
+					sb.append((char)(i+'a'));
+				}
+			}
+			return sb.toString();
+		}
+	
+	
+	
+		//maximum char 
+        char maxrepeat(){
+            if(original.length() == 0) {
+				return '\0';
+			}
+            int freq[] = new int[256];
+            int maxi=0;
+            char character=original.charAt(0);
+            for(int i=0;i<original.length();i++){
+                char ch = original.charAt(i);
+                freq[ch]++;
+                if(freq[ch]>maxi){
+                    maxi=freq[ch];
+                    character=ch;
+                }
+            }
+            return character;
+        }
+		
+		
+			//reverse
+		   String reverse(){
+            char[] arr = original.toCharArray();
+            int i=0;
+            int j=arr.length-1;
+            while(i<j){
+                char ch=arr[i];
+				arr[i]=arr[j];
+				arr[j]=ch;
+				
+                i++;
+                j--;
+            }
+            return new String(arr);
+        }
+		
+		
+		//left shift
+		String shift(int n){
+			 if (original.length() == 0) return original;
+			 
+			int len=original.length();
+			char[] arr = original.toCharArray(); 
+			char[] result = new char[len]; 
+           
+			
+            n=n%len;
+            for (int i = 0; i < len - n; i++) {
+			result[i] = arr[i + n];
+				}
+				
+            for (int i = 0; i < n; i++) {
+			result[len - n + i] = arr[i];
+				}
+				
+            return new String(result);
+        }
+
+
+}
\ No newline at end of file