Can you make Array volatile

JAR stands for?

 set(int index , E element) : This method replaces the element at the specified position in this list with the specified element.

Which of this is method of System class is used to find how long a program takes to execute?

Statement- Java is fast.

Statement-Java is dynamic.

Statement-Java is scaleability

final String str=”java”

public classFirstClass {

    public static voidmain(String[] args)

   { 

    String str="JVM";

    System.out.println(str);

   }

}

Output is?

What is the Lock interface in the Java Concurrency API?

public class outputs 

    {

        public static void main(String args[]) 

        {

             double a = 6.4;

             int  b = 5;

             a = a % 10;

             b = b % 10;

             System.out.println(a+b);

        } 

    }

Which of the following statements about a static nested class is true?

What is an event in the delegation event model used by the Java programming language?