Memory - function lcoals - get cleaned up?

memory1

package test;

import java.util.concurrent.Executor;
import java.util.concurrent.Executors;

/**
Run with param 1 and 2 or change type to "2" and "1"
Available memory changes, used jconsole to change force garbage collection.

See video https://www.youtube.com/watch?v=MadBdryX8uk

*/
public class ObjectLife {

	public static void main(String[] args) {
		// simple multi thread to mimic web app
		// ThreadPoolExecutor pool = new ThreadPoolExecutor(5, 3, 110, null, null);
		Executor pool = Executors.newFixedThreadPool(3);
		String type = "1";

		if (args.length > 0) {
			type = args[0];
		}
		Work w = null;
		if ("1".equals(type)) {
			w = new Worker();
		} else {
			w = new Worker2();
		}
		w.init(2);
		System.out.println("w type " + w.getClass().getName());
		Watch.me.print();
		pool.execute(w);
		pool.execute(Watch.me);

	}

}

class Watch implements Runnable {
	long prev = 0;
	static Watch me = new Watch();

	@Override
	public void run() {
		while (true) {
			try {
				Thread.sleep(1100);
			} catch (InterruptedException e) {
				System.out.println("Intrpt thread " + e);
			}
			print();
		}
	}

	public void print() {
		Runtime r = Runtime.getRuntime();
		long free = r.freeMemory();
		System.out.println("Free " + free + ", delta " + (free - prev));
		System.out.println(", av " + r.maxMemory());
		prev = free;
	}

}

class Work implements Runnable {
	double val = 0;
	double val3 = 0;

	public void init(double val) {
		this.val = val;
	}

	void do2() {
	}

	@Override
	public void run() {
		int cnt = 0;
		while (++cnt < 175) {
			do2();
			try {
				Thread.sleep(100);
			} catch (InterruptedException e) {
				System.out.println("Intrpt thread " + e);
			}
		}
		System.gc();
		System.out.println("Type, v3, : " + this.getClass().getName());
		Watch.me.print();

	}

}

class Worker extends Work {

	public void do2() {
		double local = ++val;
		double local2 = local * 2;
		System.out.println(" local " + local + " double " + local2);
		val3 = local2 + 1;
	}
}

class Worker2 extends Work {

	public void do2() {
		System.out.println(" local " + ++val + " double " + (val * 2));
		val3 = (val * 2) + 1;

	}

}