Mile Stone 1

Among the following is not a popular IDE for Java development?

• Visual Studio Code

• Eclipse

• NetBeans

• IntelliJ IDEA

A java program that is embedded in HTML document and runs in the context of java capable browser is known as______.

A Java monitor used in threading code must either extend Thread or implement Runnable.

• True

• False

Answer explanation

A monitor is an instance of any class that has synchronized code.

public static void main(String[] args)  { 
   try { 
      throw new IOException(); 
   } catch (__________________________ ) { } 
} 
Which of the following fills in the blank to make the code compile? (Choose all that apply)

• IOException e | RuntimeException e
  

• IOException | RuntimeException e

• FileNotFoundException e | RuntimeException e

• FileNotFoundException | RuntimeException e

Which of the following are the java primitive types?

• short

• boolean

• long double

• double

Identify the output of the following program?

String str="Hellow";

System.out.println(str.indexOf('t'));

• -1

• True

• 0

• 1

Total constructors String class have?

• 13

• 7

• 20

• 3

int ++a = 100;

System.out.println(++a);

Find the output of the following code?

• 101

• compiler error as ++a is not a valid identifier

• none

• 100

Java allows variables to be initialized ___?

• statically

• dynamically

• Both of the above

• none of the above

___ allows you to migrate your implementations over time without breaking the code that depends on the public interface of your classes.