out2file.java

java小程序

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;

class Out2File {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		
		PrintStream oldPrintStream = System.out;
		FileOutputStream bos = new FileOutputStream("output.txt");
		MultiOutputStream multi = new MultiOutputStream(new PrintStream(bos),oldPrintStream);
		System.setOut(new PrintStream(multi));
		System.out.println("jjjjjjjjjjj");
		
	}

}