We implement a simple * non-reentrant mutual exclusion lock rather than use * ReentrantLock because we do not want worker tasks to be able to * reacquire the lock when they invoke pool control methods like * setCorePoolSize. Additionally, to suppress interrupts until * the thread actually ...
package com.cry;import java.lang.reflect.Field;interface I1 {}interface I2 {}class Cell{public int mCellPublic;}class Animal extends Cell{private int mAnimalPrivate;protected int mAnimalProtected;int mAnimalDefault;public int mAnimalPublic;private static int sAnimalPrivate;protected static int sAnima...
context.checkPermission(permission) if (limited permissions were specified in the call to doPrivileged) { for (each limited permission) { if (the limited permission implies the requested permission) return; } } else return; } } // Next, check the context inherited when the thread was created...
Chapter 1: An Introduction to Java Java概述 1 1.1 Java as a Programming Platform Java程序设计平台 1 1.2 The Java“White Paper”Buzzwords Java“白皮书”中的口号 2 1.2.1 Simple 简单 3 1.2.2 Object-Oriented 面向对象 4 1.2.3 Distributed 分布式 4 ...
* replacements are protected by scanGuard, but the array is * always kept in a consistent enough state to be randomly * accessed without locking by workers performing work-stealing, * as well as other traversal-based methods in this class, so long * as reads memory-acquire by first reading...
this module depends on another module—this relationship is called amodule dependency. Each module must explicitly state its dependencies. When module Arequiresmodule B, module A is said toreadmodule B and module B isread bymodule A. To specify a dependency on another module, userequires, as ...
To help deal with * very large and long-lived usages, the hash table entries use * WeakReferences for keys. However, since reference queues are not * used, stale entries are guaranteed to be removed only when * the table starts running out of space. */ static class ThreadLocalMap { /...
final: used when a method is not allowed to be overridden by a subclass abstract: used when not providing a method body example: public void final walk6(){} // compile error, optional specifier cann't be put after return type final pulic void walk7(){} // compile OK, optional specifi...
This document describes what you need to do in order to integrate your provider into Java SE so that algorithms and other services can be found when Java Security API clients request them. Who Should Read This Document Programmers who only need to use the Java Security APIs (see Core Classes...
class) .where(company -> { company.users().orderBy(u->u.birthday().desc()).first().name().eq("小明"); company.users().orderBy(u->u.birthday().desc()).element(0).birthday().lt(LocalDateTime.now()); }).toList(); 隐式CASE WHEN表达式 List<Draft2<LocalDateTime, Long>> custom...