JAVA Threads When a class extends the Thread class ,it should override ............ method of Thread class to start that thread. go() init() run() start() go() init() run() start() ANSWER DOWNLOAD EXAMIANS APP
JAVA Threads Which keyword when applied on a method indicates that only one thread should execute the method at a time. native synchronized final static volatile native synchronized final static volatile 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); }} Compiler error Prints Prints IllegalThreadStateException is thrown Prints Compiler error Prints Prints IllegalThreadStateException is thrown Prints 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 test. The program compiles and runs and displays nothing. 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 test. The program compiles and runs and displays nothing. ANSWER DOWNLOAD EXAMIANS APP
JAVA Threads What will be output of the following program code?public class Test implements Runnable{ public void run(){ System.out.print("go"); } public static void main(String arg[]) { Thread t = new Thread(new Test()); t.run(); t.run(); t.start(); }} Compilation fails. "go" is printed "gogogo" is printed "gogo" is printed An exception is thrown at runtime. Compilation fails. "go" is printed "gogogo" is printed "gogo" is printed An exception is thrown at runtime. 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(); }} A A A A B B B B Compilation succeed but Runtime Exception A B A B A B A B Output order is not guaranteed None of these A A A A B B B B Compilation succeed but Runtime Exception A B A B A B A B Output order is not guaranteed None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS