JAVA Threads Which of the following are methods of the Thread class?1) yield()2) sleep(long msec)3) go()4) stop() 3 only None of these 1 , 2 and 4 1 and 3 3 only None of these 1 , 2 and 4 1 and 3 ANSWER DOWNLOAD EXAMIANS APP
JAVA Threads Analyze the following code:public class Test implements Runnable{ public static void main(String[] args){ Test t = new Test(); } public Test(){ Thread t = new Thread(this); t.start(); } public void run(){ System.out.println("test"); }} The program has a compilation error because t is defined in both the main() method and the constructor Test(). The program compiles fine, but it does not run because you cannot use the keyword this in the constructor. The program compiles and runs and displays nothing. The program compiles and runs and displays test. The program has a compilation error because t is defined in both the main() method and the constructor Test(). The program compiles fine, but it does not run because you cannot use the keyword this in the constructor. The program compiles and runs and displays nothing. The program compiles and runs and displays test. ANSWER DOWNLOAD EXAMIANS APP
JAVA Threads What will happen when you attempt to compile and run the following code?1. public class Test extends Thread{2. public static void main(String argv[]){3. Test t = new Test();4. t.run();5. t.start();6. }7. public void run(){8. System.out.println("run-test");9. }10. } Compilation fails due to an error on line 4 Compilation fails due to an error on line 7 None of these run-test run-test run-test Compilation fails due to an error on line 4 Compilation fails due to an error on line 7 None of these run-test run-test run-test ANSWER DOWNLOAD EXAMIANS APP
JAVA Threads Predict the output:class A implements Runnable{ public void run(){ try{ for(int i=0;i<4;i++){ Thread.sleep(100); System.out.println(Thread.currentThread().getName()); } }catch(InterruptedException e){ } }}public class Test{ public static void main(String argv[]) throws Exception{ A a = new A(); Thread t = new Thread(a, "A"); Thread t1 = new Thread(a, "B"); t.start(); t.join(); t1.start(); }} Output order is not guaranteed Compilation succeed but Runtime Exception None of these A B A B A B A B A A A A B B B B Output order is not guaranteed Compilation succeed but Runtime Exception None of these A B A B A B A B A A A A B B B B ANSWER DOWNLOAD EXAMIANS APP
JAVA Threads Predict the output:public class Test extends Thread{ private int i; public void run(){ i++; } public static void main(String[] args){ Test a = new Test(); a.run(); System.out.print(a.i); a.start(); System.out.print(a.i); }} IllegalThreadStateException is thrown Compiler error Prints Prints Prints IllegalThreadStateException is thrown Compiler error Prints Prints Prints ANSWER DOWNLOAD EXAMIANS APP
JAVA Threads What notifyAll() method do? Wakes up all threads that are waiting on this object's monitor Wakes up all threads that are not waiting on this object's monitor Wakes up one threads that are waiting on this object's monitor None of these Wakes up all threads that are waiting on this object's monitor Wakes up all threads that are not waiting on this object's monitor Wakes up one threads that are waiting on this object's monitor None of these ANSWER DOWNLOAD EXAMIANS APP
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