s.split("[ !,?._'@]+");
=====================================
/******************************************************************************

                            Online Java Compiler.
                Code, Compile, Run and Debug java program online.
Write your code in this editor and press "Run" button to execute it.

*******************************************************************************/
import java.util.*;
public class Main
{
	public static void main(String[] args) {
	    String str1="anagramp";
        //aagmnr
        String str2="marganaq";
        //aagmnr
        char arr1[]=str1.toCharArray();
        char arr2[]=str2.toCharArray();
        Arrays.sort(arr1);
        Arrays.sort(arr2);
        
        String s1="";
        String s2="";
        
        for(int i=0;i<arr1.length;i++){
            s1=s1+arr1[i];
        }
    
        
        for(int i=0;i<arr2.length;i++){
            s2=s2+arr2[i];
        }
        
        System.out.println(s1);
        System.out.println(s2);
        if(s1.equals(s2)){
            System.out.println("Both are Anagrams");
        }else{
            System.out.println("Not Anagrams");
        }
        
        
        
	}
}
===================================================
import java.io.*;
import java.util.*;

public class Solution {

    public static void main(String[] args) {
        
        Scanner sc=new Scanner(System.in);
        String A=sc.next();
        String S="";
        // for(int i=A.length()-1;i>=0;i--){
        //     S=S+A.charAt(i);
        // }
        // if(A.equals(S)){
        //     System.out.println("Yes");
        // }else{
        //     System.out.println("No");
        // }
        String rev=new StringBuffer(A).reverse().toString();
        if(A.equals(rev)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
        /* Enter your code here. Print output to STDOUT. */
        
    }
}
===========================================================

	public static void main(String[] args) {
		// TODO Auto-generated method stub
	
		ArrayList<Integer> al=new ArrayList<>();
		al.add(20);
		al.add(45);
		al.add(45);
		al.add(50);
		al.add(11);
		
		Collections.sort(al);
		System.out.println(al);
	   
	}
}
====================================================================



================================================================
int i=0;
        int j=A.length()-1;
        boolean flag=false;
        while(i<j){
            Character ch1=A.charAt(i);
            Character ch2=A.charAt(j);
            if(ch1!=ch2){
                System.out.println("No");
                flag=true;
                break;
            }
            i++;
            j--;
            
        }
        if(flag==false)
        System.out.println("Yes");
        /* Enter your code here.
========================================================

https://www.geeksforgeeks.org/problems/reverse-a-string/1
=======================================================
int min=Integer.MAX_VALUE:

for(int i=0;i<arr.length;i++)
{
   if(arr[i]<min)
   min=arr[i];
}
===========
HashSet properties are :

Duplicates not allowed
Insertion order is not preserved

TreeSet Properties are :
Duplicates are not allowed
They will arrange in Ascending order

package test;

import java.util.*;
public class Checker {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
	Scanner scan=new Scanner(System.in);
	HashSet<Integer> hs=new HashSet<>();
	hs.add(10);
	hs.add(20);
	hs.add(20);
	hs.add(30);
	
	System.out.println(hs);
	   
	}
}

==========================================
        Scanner scan=new Scanner(System.in);
	TreeSet<Integer> hs=new TreeSet<>();
	hs.add(10);
	hs.add(20);
	hs.add(20);
	hs.add(30);
	
	System.out.println(hs);
==================================================
LinkedHashSet<Integer> lhs=new LinkedHashSet<>();
Scanner scan=new Scanner(System.in);
	LinkedHashSet<Integer> hs=new LinkedHashSet<>();
	hs.add(10);
	hs.add(30);
	hs.add(20);
	hs.add(0);
	
	System.out.println(hs);
=================================================
LinkedHashMap<Integer,String> hm=new LinkedHashMap<>();
		hm.put(10, "Shayali");
		hm.put(20, "Vineeth");
		hm.put(40, "Bhanuja");
		
		String str=hm.get(40);
		System.out.println(hm.containsKey(20));
		System.out.println(str);
		
		System.out.println(hm);
======================================================
Map Iterator :
=============
LinkedHashMap<Integer,String> hm=new LinkedHashMap<>();
		hm.put(10, "Shayali");
		hm.put(20, "Vineeth");
		hm.put(40, "Bhanuja");
		
		for(Map.Entry<Integer,String> me:hm.entrySet()) {
			System.out.println(me.getKey()+"   "+me.getValue());
		}
========================================================