Here is an example of how to use the ThreadLocalBufferManager class from the org.apache.commons.io package in Java:

import org.apache.commons.io.output.ThreadLocalBufferManager;
import org.apache.commons.io.output.ThreadLocalBufferManager.Buffer;

public class Main {
    public static void main(String[] args) {
        // Create a ThreadLocalBufferManager object
        ThreadLocalBufferManager bufferManager = new ThreadLocalBufferManager();

        // Get the buffer from the buffer manager
        Buffer buffer = bufferManager.getBuffer();

        // Append some text to the buffer
        buffer.append("Hello");
        buffer.append(" ");
        buffer.append("World");
        buffer.append("!");

        // Get the resulting text
        String result = buffer.toString();
        System.out.println(result);
    }
}

In this example, we create a ThreadLocalBufferManager object and use the getBuffer() method to get a Buffer object from the buffer manager. We then append "Hello", " ", "World" and "!" to the buffer and get the resulting text using the toString() method. The resulting text is "Hello World!".

It's worth noting that this class was removed from the apache.commons.io library in version 2.6 and later versions, you can use other classes like StringBuilder and StringBuffer for similar functionality.