What is the correct syntax for importing java.util.Scanner?

If we want a class not to be overridden,the class must be done as

To document an API, which tool do you use?

Which of these are advantages of encapsulation in Java?

What is the most efficient way to concatenate a large number of strings in Java?

Which of the following is a valid constructor signature?

ConcurrentModificationException extends .......

What is super class of all classes in Java?

A Guarded Block is a concurrency idiom in which:

What will be the output of this code? class Main { static abstract class Base { protected Base() { init(); } abstract void init(); } static class Child extends Base { private final int value; public Child() { value = 5; } @Override public void init() { System.out.println("value = " + value); } } public static void main(String[] args) { Child c = new Child(); } }

Given a class containing the following pieces of code: ---------------------- public static <T> List getList() { return new ArrayList<T>(); } // ... List<?> list = new ArrayList<Integer>(); ---------------------- Adding which of the following lines would cause the class to not compile?