String Function - I [ Palindrome & Longest Word ]

When reverse value of a word, sentence or a number is same as its original input is known as palindrome.

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import java.io.*;

    public class StringPalindrome

        {

            public static void main(String args[])throws IOException

                {

                    String Str;

                    BufferedReader Br=new BufferedReader(new InputStreamReader(System.in));

                    System.out.print("\n\tEnter a String : ");

                    Str=Br.readLine();

                    StringPalindrome S=new StringPalindrome();

                    if(Str.equalsIgnoreCase(S.isPalin(Str)))

                        {

                            System.out.print("\n\t"+Str+" is a Palindrome Word");

                        }

                    else

                        {

                            System.out.print("\n\t"+Str+" is not a Palindrome Word");   

                        }

               }

            String isPalin(String S)

                {

                    String Str1="";

                    for(int i=0;i<s.length();i++)

                        {

                            Str1=S.charAt(i)+Str1;

                        }

                    return Str1;

                }

        }

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Output :

          Enter a String : Madam

          Madam is a Palindrome Word

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Program to find the largest word in a Sentence

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import java.io.*;

    public class LargestWord

        {

            public static void main(String args[])throws IOException

                {

                    String Str;

                    BufferedReader Br=new BufferedReader(new InputStreamReader(System.in));

                    System.out.print("\n\tEnter a Sentence : ");

                    Str=Br.readLine();

                    LargestWord S=new LargestWord();

                    S.Large(Str);

                }  

            void Large(String S)

                {

                    String Str1="";

                    S=S+" ";

                    int j=0,Len=0;

                    for(int i=0;i<s.length();i++)

                        {

                            if(S.charAt(i)==' ')

                                {

                                    String Str2=S.substring(j,i);

                                    j=i+1;

                                    Str2=Str2.trim();

                                    if(Str2.length()>Len)

                                        {

                                            Len=Str2.length();

                                            Str1=Str2;

                                        }

                                }   

                        }

                    System.out.println("\n\tLargest Word in '"+S+"' is '"+Str1+"' the Length is = "+Len);

                }

        }

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Output :

Enter a Sentence : To find the largest word in a String

          Largest Word in 'To find the largest word in a String ' is 'largest' the Length is = 7

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