HighCpu.java

import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.stream.IntStream;

public class HighCpu{

    private static BlockingQueue<String> messageStrings = new LinkedBlockingQueue<>();

    public void init(){
        ExecutorService executorService = new ThreadPoolExecutor(1, 1, 0L, TimeUnit.MILLISECONDS, 
                new LinkedBlockingQueue<>());
        executorService.submit(new BatchLogRunnable());
    }

    static class BatchLogRunnable implements Runnable{
        @Override
        public void run(){
            while (true) {
                try {
                    Thread.sleep(3L);
                    StringBuilder builder = new StringBuilder();
                    builder.append(messageStrings.take());
                    System.out.println(builder.toString());
                } catch (InterruptedException exx) {
                    System.out.println(exx);
                }
            }
        }
    }

    public static void main (String [] args) {
        HighCpu hightCpu = new HighCpu();
        hightCpu.init();

        IntStream.range(0, 90000000).forEach(i -> {
            try{
                messageStrings.put("test ");
            }catch(Exception e){
                System.out.println(e);
            }

        });
    }
}