input_reader.java

JAVA程序设计课程中各章节的程序实例。

import java.io.*;

import java.util.*;

 

public class input_reader {

   public static void main(String args[]) throws IOException {

      Scanner kb = new Scanner(System.in); 

      System.out.print("Enter an integer: ");

      int a = kb.nextInt();   //reads an integer from keyboard

      System.out.println(a);

      

      System.out.print("Enter a double: ");

      double d = kb.nextDouble();   //reads a double from keyboard

      System.out.println(d);

 

      System.out.print("Enter a word: ");

      String s = kb.next();   //reads a string from keyboard         

      System.out.println(s);  

   }

}