timer0.java

来自「JAVA编程思想源代码 值得一下 很难找的」· Java 代码 · 共 24 行

package chapter7;

import java.io.*;
import java.text.*;

public class Timer0 {
	public static void main(String[] argv) throws IOException {

		long t0, t1;
		System.out.println("Press return when ready");
		t0 = System.currentTimeMillis();
		int b;
		do {
			b = System.in.read();
		} while (b != '\r' && b != '\n');
		t1 = System.currentTimeMillis();
		double deltaT = t1 - t0;
		System.out.println("You took "
				+ DecimalFormat.getInstance().format(deltaT / 1000.)
				+ " seconds.");

	}
}