Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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you must create the data files with a text tool, such as Notepad
exampleThree
In the while loop, this
package hasnext;
import java.util.Scanner;
import java.io.*;
//
public class Hasnext {
public static void main(String[] args) throws IOException
{
File loopfile = new File("fileLoop.txt");
Scanner getAll = new Scanner( loopfile );
// connect a Scanner to the file
int num = 0, square = 0;
while(getAll.hasNextInt())
{
num = getAll.nextInt();
square = num * num ;
System.out.println("The square of " + num + " is " + square);
}
getAll.close();
}
}
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