Added Program 2 in java

Java/program-2/README.md

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+Program 2
+
+Given a String,check if it is a palindrome or not.
+
+Variable description
+s= Input String
+start= Starting index of String s
+end= Last index of String s
+flag= Variable to mark if the String is not a Palindrome

Java/program-2/program.java

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+import java.io.*;
+import java.util.*;
+class prg{
+	public static void main(String args[])
+	{
+		Scanner sc=new Scanner(System.in);
+		String s=sc.next();
+		int start=0;
+		int end=s.length()-1;
+		int flag=0;
+		while(start<end)
+		{
+			if(s.charAt(start)!=s.charAt(end))
+			{
+				flag=1;
+				break;
+			}
+			start++;
+			end--;
+		}
+		if(flag==1)
+			System.out.println("Given string is not a Palindrome");
+		else
+			System.out.println("Given string is a Palindrome");
+	}
+}