Java 비동기 Thread - Java bidong-gi Thread

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public class PrintService {

    public void print2(final String message) throws Exception {
        new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println(message);
            }            
        }).start();
    }

}

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public class PrintService {

	@Async
	public void print1(final String message){
    	System.out.println(message)
    }
}

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@Configuration
@EnableAsync
public class AsyncConfigure {

	private final int CORE_POOL_SIZE = 3;
    private final int MAX_POOL_SIZE = 20;
    private final int QUEUE_CAPACITY = 15;
    private final String CUSTOM_THREAD_NAME_PREFIX = "CUSTOM_THREAD-";

    @Bean(name = "threadPoolTaskExecutor")
    public Executor threadPoolTaskExecutor() {
        ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
        taskExecutor.setCorePoolSize(CORE_POOL_SIZE);
        taskExecutor.setMaxPoolSize(MAX_POOL_SIZE);
        taskExecutor.setQueueCapacity(QUEUE_CAPACITY);
        taskExecutor.setThreadNamePrefix(CUSTOM_THREAD_NAME_PREFIX);
        taskExecutor.initialize();
        return taskExecutor;
    }

}