if(init_at_startup() || is_initialized()) { returnfalse;// initialized at startup or already initialized } charfn[PATH_MAX+1]; sprintf(fn,".attach_pid%d", os::current_process_id()); intret; structstat64st; RESTARTABLE(::stat64(fn, &st), ...
public static void move(){ System.out.println("What do you want to do?"); Scanner scan = new Scanner(System.in); int userMove = scan.nextInt(); return userMove; }public static void usersMove(String playerName, int gesture){ int userMove = move(); if (userMove == -1) { break...
AI代码解释 final String script="Runtime.getRuntime().availableProcessors()";Binding intBinding=newBinding();GroovyShell shell=newGroovyShell(intBinding);final Object eval=shell.evaluate(script);System.out.println(eval); GroovyClassLoader Groovy官方提供GroovyClassLoader类,支持从文件、url或字符串中加载...
finalvoidlock(){// 多次尝试获取锁,避免将线程阻塞再唤醒if(compareAndSetState(0,1))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();}prote...
int i=1; if(i==1) ... else ... // dead code 通常简单地移动返回语句将修复错误。阅读关于如何修复Unreachable Statement Java软件错误的讨论。 (@StackOverflow) 13.“Variable <X> Might Not Have Been Initialized” 当方法中声明的局部变量未初始化时,就会发生这种错误。它也会出现在没有初始值的变量...
classKeylessEntry{staticclassKey{Integerid;Key(Integerid){this.id=id;}@OverridepublicinthashCode(){returnid.hashCode();}}publicstaticvoidmain(String[]args){Mapm=newHashMap();while(true)for(inti=0;i<10000;i++)if(!m.containsKey(newKey(i)))m.put(newKey(i),"Number:"+i);}} ...
(Universe::is_gte_jdk14x_version() && UseNewReflection) assert(ptypes->is_objArray(), "just checking"); int args_len = args.is_null() ? 0 : args->length(); // Check number of arguments if (ptypes->length() != args_len) { THROW_MSG_0(vmSymbols::java_lang_IllegalArgument...
小结: 1、 This method is used to replace the definition of a class without reference to the existing class file bytes, as one might do when recompiling f
* * @return The position of this buffer */ public final int position() { return position; } /** * Sets this buffer's position. If the mark is defined and larger than the * new position then it is discarded. * * @param newPosition * The new position value; must be non-negative ...
options = os::strdup_check_oom(pos +1, mtArguments); }#if!INCLUDE_JVMTIif(valid_jdwp_agent(name, is_absolute_path)) { jio_fprintf(defaultStream::error_stream(),"Debugging agents are not supported in this VM\n");returnJNI_ERR; ...