New to Java

Hi,

At the moment I have following code:

public void run()
{
	while (true)
		// here collecting data
		StringBuffer tx = new StringBuffer(128);
		tx.append(...);
		// sending the data to some remote peer

This is of course not good. Every time new memory is allocated, while it is better to reuse the memory whitch has a stable point after a few loops. But then I need a method to clear the buffer witch I cannot find. Something like this:

public void run()
{
	StringBuffer tx = new StringBuffer(128);
	while (true)
		// here collecting data
		tx.clear(); // but I connot find sutch a method !!!
		tx.append(...);
		// sending the data to some remote peer

But I cannot find a method Clear or something similar. Someone knows ?