步骤1:定义一个自定义异常类 在这一步中,我们需要创建一个自定义异常类,用于表示“非零返回是什么错误Java”。以下是相应的代码: // 定义自定义异常类publicclassNonZeroReturnErrorextendsException{// 构造方法publicNonZeroReturnError(Stringmessage){super(message);}} 1. 2. 3. 4. 5. 6. 7. 在这段代...
lock->set_displaced_header(NULL); return; } #if 0 // 无用的代码 #endif // The object header will never be displaced to this lock, // so it does not matter what the value is, except that it // must be non-zero to avoid looking like a re-entrant lock, // and must not look ...
AI代码解释 publicclassExceptionClassificationExample{publicstaticvoidmain(String[]args){try{readFile("nonexistent.txt");// 检查异常divideByZero(5,0);// 运行时异常}catch(FileNotFoundException e){System.out.println("File not found: "+e.getMessage());}catch(ArithmeticException e){System.out.prin...
1))setExclusiveOwnerThread(Thread.currentThread());elseacquire(1);}publicfinalvoidacquire(intarg){// 尝试获取锁失败后再放入等待队列if(!tryAcquire(arg)&&acquireQueued(addWaiter(Node.EXCLUSIVE),arg))selfInterrupt();}protectedfinalbooleantryAcquire(intacquires){returnnonfairTryAcquire(acquires);}finalboolean...
面试官：RabbitMQ-如何保证消息不丢失 候选人：嗯！我们当时MYSQL和Redis的数据双写一致性就是采用Rabbit...
DT_RETURN_MARK(RegisterNatives, jint, (constjint&)ret); Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));for(intindex =0; index < nMethods; index++) {constchar* meth_name = methods[index].name;constchar* meth_sig = methods[index].signature;intmeth_name_len...
2.5.1 分代收集器 ParNew:一款多线程的收集器,采用复制算法,主要工作在 Young 区,可以通过-XX:ParallelGCThreads参数来控制收集的线程数,整个过程都是 STW 的,常与 CMS 组合使用。 CMS:以获取最短回收停顿时间为目标,采用“标记-清除”算法,分 4 大步进行垃圾收集,其中初始标记和重新标记会 STW ,多数应用于互...
* @return true | false */ public final native boolean compareAndSwapObject(Object o, long offset, Object expected, Object update); public final native boolean compareAndSwapInt(Object o, long offset, int expected,int update); public final native boolean compareAndSwapLong(Object o, long offset...
1. 2. 3. 步骤5:返回非0随机数 最后,我们将生成的非0随机数返回给调用者。 returnrandomNumber; 1. 完整代码示例 下面是一个完整的Java方法示例,可用于生成非0随机数: importjava.util.Random;publicclassRandomNumberGenerator{publicstaticintgenerateNonZeroRandomNumber(){Randomrandom=newRandom();intrandomNumbe...
return klass; } The new behavior is a consequence of the fact that the VM now supports class literals in the constant pool. The old behavior remains in classes compiled with a pre-5.0 compiler or with the-target 1.4flag, even if run in the 5.0 VM. ...