Java語言深入－－對JAVA 的多線程淺析

sem.readLock();

System.out.println("Read op:"+getName());

try {sleep((int)(Math.random()*50));}

catch(InterruptedException e){;}

System.out.println("Unlocking readLock:"+getName());

sem.readUnlock();

}

else if(op.compareTo("write")==0){

System.out.println("Trying to get writeLock:"+getName());

sem.writeLock();

System.out.println("Write op:"+getName());

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