Detailed explanation of examples of Java programming implementing fast IO in ICPC

This article mainly introduces the Java Fast IO in ICPC implementation source code, which has certain reference value. Friends who need it can learn about it.

This article will introduce Java’s implementation of ICPC fast IO. Let’s take a look at the specific code.

Do not handle EOF:

##

import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Random;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
import java.io.BufferedReader;
import java.util.Comparator;
import java.io.InputStream; 
/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
 public static void main(String[] args) {
 InputStream inputStream = System.in;
 OutputStream outputStream = System.out;
 InputReader in = new InputReader(inputStream);
 PrintWriter out = new PrintWriter(outputStream);
 TaskD solver = new TaskD();
 solver.solve(1, in, out);
 out.close();
 } 
 static class TaskD {
 public void solve(int testNumber, InputReader in, PrintWriter out) { 
 }
 } 
 static class InputReader {
 public BufferedReader reader;
 public StringTokenizer tokenizer;
 public InputReader(InputStream stream) {
  reader = new BufferedReader(new InputStreamReader(stream), 32768);
  tokenizer = null;
 }
 public String next() {
  while (tokenizer == null || !tokenizer.hasMoreTokens()) {
  try {
   tokenizer = new StringTokenizer(reader.readLine());
  } catch (IOException e) {
   throw new RuntimeException(e);
  }
  }
  return tokenizer.nextToken();
 } 
 public int nextInt() {
  return Integer.parseInt(next());
 } 
 }
}

Handle EOF:

import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.Random;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
import java.io.BufferedReader;
import java.util.Comparator;
import java.io.InputStream;
 
/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
 public static void main(String[] args) {
 InputStream inputStream = System.in;
 OutputStream outputStream = System.out;
 InputReader in = new InputReader(inputStream);
 PrintWriter out = new PrintWriter(outputStream);
 TaskD solver = new TaskD();
 solver.solve(1, in, out);
 out.close();
 } 
 static class TaskD {
 public void solve(int testNumber, InputReader in, PrintWriter out) {
  while(in.hasNext())
  {
  int a=in.nextInt();
  int b=in.nextInt();
  System.out.println(a+b);
  }
 }
 }
 static class InputReader {
 public BufferedReader reader;
 public StringTokenizer tokenizer;
  public InputReader(InputStream stream) {
  reader = new BufferedReader(new InputStreamReader(stream), 32768);
  tokenizer = null;
 } 
 public boolean hasNext() {
  while (tokenizer == null || !tokenizer.hasMoreTokens()) {
  try {
   String line = reader.readLine();
   if(line == null) return false;
   tokenizer = new StringTokenizer(line);
  } catch (IOException e) {
   throw new RuntimeException(e);
  }
  }
  return true;
 }
 public String next()
 {
  return tokenizer.nextToken();
 }
 public int nextInt() {
  return Integer.parseInt(next());
 }
 }
}

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