13 Method getInstance2 = class2.getDeclaredMethod("getInstance"); 14 15 Object a = getInstance1.invoke(null); 16 Object b = getInstance2.invoke(null); 17 18 assertEquals(a, b); 19 } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10
System.out.println("In synchronized method"); } public void syncBlock() { synchronized (this) { // 同步代码块 System.out.println("In synchronized block"); } } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. ReentrantLock 使用示例: import java.util.concurrent.locks.ReentrantLock...
2.1 底层实现 Synchronize是Java的关键字,ReentrantLock是Java类。因此,Synchronize是JVM层面语法层面的同步锁,ReentrantLock是API层面的同步锁 2.2 锁的用法 设置锁和释放锁:Synchroinze是自动加锁和释放锁的,ReentrantLock设置和释放都需要手动操作; 修饰的对象:Synchroinze可以修饰方法和代码块,ReentrantLock只能修饰代码块 ...
java public class ReentrantExample { public synchronized void method1() { System.out.println("In method1"); method2(); // 调用method2时,线程已经持有对象锁 } public synchronized void method2() { System.out.println("In method2"); } public static void main(String[] args) { ReentrantExampl...
publicvoidmethod(){synchronized(this) { } } 它锁是我们手动指定的 接下来,我们看看 jvm 里对于 sync锁是怎么标记的吧. 在资源管理器中找到我们写的这个java文件,使用javap -v xxx.java命令看看 像我这样,我是把结果输出到一个文件里了 javap -v Main.class >> ./1.txt ...
SynchronizeMethodCountingProcessor: ... public synchronized void process() { doProcess(); count++; } ... 这样子固然可以解决问题,但是我们其实没必要对整个函数都进行同步,这样会影响程序的吞吐量,我们只需要在计数器加一的过程进行同步就好了,由此我们写出第二种synchronize的版本,也就是synchronize代码块:...
How to use synchronize method in org.jbox2d.dynamics.FixtureBest Java code snippets using org.jbox2d.dynamics.Fixture.synchronize (Showing top 10 results out of 315) origin: libgdx/libgdx Body.synchronizeFixtures() protected final void synchronizeFixtures() { final Transform xf1 = pxf; // xf...
getGeodataXformApplyMethod in interface ISynchronizeParameters2 Returns: A com.esri.arcgis.datasourcesraster.esriGeodataXformApplyMethod constant Throws: IOException - If there are interop problems. AutomationException - If the ArcObject component throws an exception.set...
IJavaPeerable IJniNameProviderAttribute JavaArray<T> JavaBooleanArray JavaCharArray JavaDoubleArray JavaException JavaInt16Array JavaInt32Array JavaInt64Array JavaInterfaceDefaultMethodAttribute JavaLibraryReferenceAttribute JavaObject JavaObjectArray<T> JavaObjectExtensions JavaPeerableExtensions JavaPrimitiveArray...
publicclassLockExample{// 创建锁对象privatefinalReentrantLocklock=newReentrantLock();publicvoidmethod(){// 加锁操作lock.lock();try{// ...}finally{// 释放锁lock.unlock();}}} 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. ...