public static ThreadPoolExecutor newExecutor(int corePoolSize, int maximumPoolSize) {
		return ExecutorBuilder.create().setCorePoolSize(corePoolSize).setMaxPoolSize(maximumPoolSize).build();
	}
public static ThreadPoolExecutor newExecutor ( int corePoolSize , int maximumPoolSize ) { return ExecutorBuilder . create ( ) . setCorePoolSize ( corePoolSize ) . setMaxPoolSize ( maximumPoolSize ) . build ( ) ; }
获得一个新的线程池<br>
如果maximumPoolSize =》 corePoolSize，在没有新任务加入的情况下，多出的线程将最多保留60s

@param corePoolSize 初始线程池大小
@param maximumPoolSize 最大线程池大小
@return {@link ThreadPoolExecutor}