java中讲讲PrintWriter的用法，举例？

1.2 PrintWriter的用法 

马 克-to-win：PrintWriter和PrintStream类似，只不过PrintStream是针对字节流的，而PrintWriter是针对字符流的。

例：1.2.1
import java.io.*;
public class TestMark_to_win {
    public static void main(String args[]) throws Exception {
        String s1 = "我们" + "\n";
        String s2 = "你们" + "\n";
        PrintWriter p = new PrintWriter("c:/out.txt");
        p.println("output" + s1);
        p.println("output" + s2);
        /*without using the following statement, the file name can be write out, but the content of the file is empty. */
        p.close();
    }
}

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