我看到别人有段代码:
public class TestPrintStream {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
//Use StringBuilder is just OK, I think.
OutputStream os = new ByteArrayOutputStream();
PrintStream ps = new PrintStream(os);
ps.println("Test PrintStream.");
ps.flush();
System.out.println(os.toString());
}
}
以上代码明明可以直接用StringBuilder搞定,非要弄PrintStream和OutputStream干嘛?有什么好处吗?