java 简单的打印流

import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintStream;
public class PrintDemo {
    public static void main(String[] args) throws Exception{
        PrintStream ps=new PrintStream(new FileOutputStream(new File("d:"+File.separator+"te.txt")));
        ps.print("hello");
        ps.println("hjw");
        ps.print("1+1="+2);
        ps.close();
    }
}

print方法写入文件，比OutputStream方便多了