doruntime.java

来自「关于的ｊａｖａ的多媒体课件」· Java 代码 · 共 30 行

/**
 * 练习题4，使用Runtime
 */
package exercise;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.*;
import java.io.*;

public class DoRuntime {
	public static void main(String args[]) throws IOException {
		if (args.length <= 0) {
			System.err.println("Need command to run");
			System.exit(-1);
		}
		Runtime runtime = Runtime.getRuntime();
		Process process = runtime.exec(args);
		InputStream is = process.getInputStream();
		InputStreamReader isr = new InputStreamReader(is);
		BufferedReader br = new BufferedReader(isr);
		String line;
		System.out.printf("Output of running %s is:", Arrays.toString(args));
		while ((line = br.readLine()) != null) {
			System.out.println(line);
		}
	}
}