Java ReentrantLock lockInterruptibly() Method

by Online Tutorials Library July 22, 2022

Java ReentrantLock lockInterruptibly() Method

The lockInterruptibly() method of ReentrantLock class hold the lock until or unless the current thread is interrupted.

Syntax

Parameter

No parameter is passed.

Returns

Throws

InterruptedException – if the current thread is interrupted

Example 1

  import java.util.Date;   import java.util.concurrent.ExecutorService;   import java.util.concurrent.Executors;   import java.util.concurrent.locks.ReentrantLock;       class WorkerClass29 implements Runnable   {     String nm;     ReentrantLock relc;     public WorkerClass29(ReentrantLock rl, String n)     {       relc = rl;       nm = n;     }     public void run()     {                     //Outer Lock         boolean ans = relc.tryLock();             //  True if lock is free         if(ans)         {                               int i =0;          Thread t=new Thread();                    for(  i=0 ; i<5 ; i++)          {         if(i>3){                 System.out.println(”    “+i+  ”  ” +t.getPriority());                           }         if(i<2) {         System.out.println(”    “+i+  ”  ” +t.getName());                  }                   }                }            }  }         public class  ReentrantLocklockInterruptiblyExample1  {     static final int MAX_Time = 2;     public static void main(String[] args)     {       ReentrantLock rel = new ReentrantLock();       ExecutorService pool = Executors.newFixedThreadPool(MAX_Time);       Runnable wrk1 = new WorkerClass29(rel, “Job1”);       pool.execute(wrk1);       pool.shutdown();     }   }   

Test it Now

Output:

0  Thread-0  1  Thread-0  4  5

Example 2

   import java.util.concurrent.locks.ReentrantLock;      public class ReentrantLocklockInterruptiblyExample2  {       public static void main(String[] args) {                  ReentrantLock lock=new ReentrantLock();              MyRunnableClass909 myRnbl=new MyRunnableClass909(lock);              new Thread(myRnbl,”Thread-1″).start();                                 }   }         class MyRunnableClass909 implements Runnable{              ReentrantLock lock;       public MyRunnableClass909(ReentrantLock lock) {               this.lock=lock;       }              public void run(){                            System.out.println(Thread.currentThread().getName()                           +” is Waiting to get the lock”);                            try {                                int i=1;                  Thread t=new Thread();                    while(i<5) {                                        System.out.println(”     “+t.getThreadGroup());                    if(i==2)                      System.out.println(”     “+t.getThreadGroup());                    if(i==3)                      System.out.println(”     “+t.isInterrupted());                    if(i==4)                      System.out.println(”     “+t.getStackTrace());                                        i=i+1;                    }                                                                       assert !lock.isHeldByCurrentThread();                    lock.lock();                                                  System.out.println(” after sleep(1500) Is held by Current Thread – ” + lock.isHeldByCurrentThread());                                      }                                      finally {                  lock.unlock();                  }              }   }  

Test it Now

Output:

Thread-1 is Waiting to get the lock       java.lang.ThreadGroup[name=main,maxpri=10]       java.lang.ThreadGroup[name=main,maxpri=10]       java.lang.ThreadGroup[name=main,maxpri=10]       java.lang.ThreadGroup[name=main,maxpri=10]       false       java.lang.ThreadGroup[name=main,maxpri=10]       [Ljava.lang.StackTraceElement;@53bc4411   after sleep(1500) Is held by Current Thread - true

Next TopicJava ReentrantLock

Java ReentrantLock lockInterruptibly() Method

Java ReentrantLock lockInterruptibly() Method

Syntax

Parameter

Returns

Throws

Example 1

Example 2

Java Executors newWorkStealingPool() Method

Java Boolean Keyword

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