Create sentencePalindrome.java

String/sentencePalindrome.java

@@ -0,0 +1,61 @@
+/*
+     Print the palindrome words present in the sentence and its frequency.
+*/
+
+
+import java.util.*;
+class sentencePalindrome
+{
+    String str;
+    void accept()
+    {
+        Scanner sc=new Scanner(System.in);
+        System.out.println("Enter a sentence");
+        str=sc.nextLine();
+        str=str.toUpperCase();
+    }
+
+    boolean isPalin(String s)
+    {//checks if the word is Palindrome or not
+        int l=s.length();
+        String rev="";
+        for(int i=l-1; i>=0; i--)
+        {
+            rev=rev+s.charAt(i);
+        }
+        if(rev.equals(s))
+            return true;
+        else
+            return false;
+    }
+
+    void main()
+    {
+        accept();
+        char ch=str.charAt(str.length()-1);
+        if(ch=='.' || ch=='!' || ch=='?')
+        {            
+            int freq=0;
+            StringTokenizer st=new StringTokenizer(str," .!?");
+            int c=st.countTokens();
+            for(int i=1; i<=c; i++)
+            {
+                String w=st.nextToken();
+                boolean r=isPalin(w); 
+                if (r==true)
+                {
+                    System.out.print(w+" ");
+                    freq++;
+                }
+            }
+            System.out.println();
+            if(freq!=0)
+                System.out.println("NUMBER OF PALINDROMIC WORDS =”+ freq);
+            else 
+                System.out.println("NO PALINDROMIC WORDS");
+        }
+     }
+       else
+            System.out.println("INVALID INPUT");
+    }
+}