小编roc*_*boy的帖子

我认为这已经得到了回答,但我似乎无法找到它.

我有一个实例方法,它将一些内容写入输出流

writeTo(OutputStream){
     //class specific logic
}

我希望它将这些内容放入StringBuilder中.我可以通过临时文件来做到这一点,但这似乎不对.我想做的事情如下:

Stringbuilder sb = /* */;
OutputStream os = outForStringBuilder(sb);//not sure how to do this
instance.writeTo(os); //This should write the contents to Stringbuilder

我知道String pool是如何工作的.那说:

void doSomething1(){
 System.out.println("This string is now added to the string pool and will stay there even after this method returns");
}

void doSomething2(){
 String msg = new String("This string is now added to the string pool and will stay there even after this method returns");

 System.out.println(msg);
}

是doSomething2不是更好doSomething1.如果一些字符串的可能性非常低,是否应该鼓励这一点reused.我看到的问题是在案例1中,即使不再使用,字符串也会在延长的时间内保持在范围内.