Java Template (Fast I/O)

fastJava.java

import java.util.*;
import java.io.*;
class
{
 
    /************************ SOLUTION STARTS HERE ************************/
 
 
    private static void solve(FastScanner s1, PrintWriter out){
 
        /*
            Start typing your solution here
            get input by using "s1" object (It works exactly like Scanner but faster than it)
            (eg).
                  int a = s1.nextInt()
                  String s = s1.nextLine() //Returns an entire line
                  String s = s1.next()     //Returns only one word
                 
            Print output using "out" object
            (eg).
                out.println("Hello,World!")
        */
    }
 
    /************************ SOLUTION ENDS HERE ************************/
 
 
 
    /************************ TEMPLATE STARTS HERE ************************/
 
    public static void main(String []args) throws IOException {
        FastScanner in  = new FastScanner(System.in);
        PrintWriter out =
                new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)), false);
        solve(in, out);
        in.close();
        out.close();
    }    
 
    static class FastScanner{
        public BufferedReader reader;
        public StringTokenizer st;
        public FastScanner(InputStream stream){
            reader = new BufferedReader(new InputStreamReader(stream));
            st = null;
        }
        public String next(){
            while(st == null || !st.hasMoreTokens()){
                try{
                    String line = reader.readLine();
                    if(line == null) return null;
                    st = new StringTokenizer(line);
                }catch (Exception e){
                    throw (new RuntimeException());
                }
            }
            return st.nextToken();
        }
        public String nextLine(){
            String str = null;
            try {
                str = reader.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
        public int nextInt(){
            return Integer.parseInt(next());
        }
        public long nextLong(){
            return Long.parseLong(next());
        }
        public double nextDouble(){
            return Double.parseDouble(next());
        }
        public char nextChar(){
            return next().charAt(0);
        }
        int[] nextIntArray(int n) {
            int[] arr = new int[n];
            for (int i = 0; i < n; i++) {
                arr[i] = nextInt();
            }
            return arr;
        }
        long[] nextLongArray(int n) {
            long[] arr = new long[n];
            for (int i = 0; i < n; i++) {
                arr[i] = nextLong();
            }
            return arr;
        }
        public void close(){   
            try{ reader.close(); } catch(IOException e){e.printStackTrace();}
        }
    }
   
    /************************ TEMPLATE ENDS HERE ************************/
}