1、重量级锁sychronized
public synchronized String testLock01() { // todo 业务逻辑 return "test01"; } public String testLock02() { synchronized (this) { System.out.println("true = " + true); } return "test02"; }
2、reentrantLock
final ReentrantLock reentrantLock = new ReentrantLock(); public String test02() { reentrantLock.lock(); System.out.println("销住的代码"); reentrantLock.unlock(); return "test02"; }