readthreeintegers.java

一些JAVA程序

/*!Begin Snippet:file*/
import  java.io.*;
import  java.util.*;

public class ReadThreeIntegers  {

	private static BufferedReader  stdIn =
		new BufferedReader(new  InputStreamReader(System.in));

	private static PrintWriter  stdOut =
		new PrintWriter(System.out, true);

	private static PrintWriter  stdErr =
		new PrintWriter(System.err, true);

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

		stdErr.print("Enter three integers on one line:  ");
		stdErr.flush();

		StringTokenizer  tokenizer =
			new  StringTokenizer(stdIn.readLine());

		if (tokenizer.countTokens() != 3) {
			stdErr.println("Invalid input");
		} else {

			int  firstValue = Integer.parseInt(tokenizer.nextToken());
			int  secondValue = Integer.parseInt(tokenizer.nextToken());
			int  thirdValue = Integer.parseInt(tokenizer.nextToken());

			stdOut.println("First value: " + firstValue);
			stdOut.println("Second value: " + secondValue);
			stdOut.println("Third value: " + thirdValue);
		}
	}
}
/*!End Snippet:file*/