Java.util.Scanner.next(String pattern) 方法

package com.codingdict;

import java.util.*;

public class ScannerDemo {
   public static void main(String[] args) {

      String s = "Hello World! 3 + 3.0 = 6 ";

      // create a new scanner with the specified String Object
      Scanner scanner = new Scanner(s);

      // check if next token matches the pattern and print it
      System.out.println("" + scanner.next("Hello"));

      // check if next token matches the pattern and print it
      System.out.println("" + scanner.next("World!"));

      // close the scanner
      scanner.close();
   }
}