引言Java作为一种广泛使用的编程语言,其高级特性在面试中常常成为考察的重点。本文将深入解析Java高级高频面试题,涵盖实战解析与核心考点,帮助读者全面准备面试。一、Java高级特性解析1. 集合框架...
Java作为一种广泛使用的编程语言,其高级特性在面试中常常成为考察的重点。本文将深入解析Java高级高频面试题,涵盖实战解析与核心考点,帮助读者全面准备面试。
List list = new ArrayList<>();
Set set = new HashSet<>();
Map map = new HashMap<>(); public class MyThread extends Thread { @Override public void run() { // 实现线程逻辑 }
}
ReentrantLock lock = new ReentrantLock();
lock.lock();
try { // 临界区代码
} finally { lock.unlock();
}
ExecutorService executor = Executors.newFixedThreadPool(10);
executor.execute(new MyThread());
executor.shutdown();public class Main { public static void main(String[] args) { // 创建对象,占用堆内存 String str = new String("Hello"); // 方法区中加载类信息 Class> clazz = Main.class; }
}// 单例模式
public class Singleton { private static Singleton instance; private Singleton() {} public static Singleton getInstance() { if (instance == null) { instance = new Singleton(); } return instance; }
}public class Singleton { private static Singleton instance; private Singleton() {} public static Singleton getInstance() { if (instance == null) { instance = new Singleton(); } return instance; }
}ExecutorService executor = Executors.newFixedThreadPool(10);
executor.execute(new MyThread());
executor.shutdown();public class TestGC { public static void main(String[] args) { TestGC obj = new TestGC(); System.gc(); while (obj != null) { // 等待垃圾回收 } }
}本文深入解析了Java高级高频面试题,涵盖了实战解析与核心考点。希望读者通过本文的学习,能够更好地准备Java面试,提升自己的编程能力。