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Online Java Coding Test – Basic Level

Topics Covered

  • Class
  • Object Concepts
  • Variables
  • Operators
  • Loops
  • Methods
  • Constructors
  • Coding

Useful for hiring

  • Junior Java Developer
  • Entry Level Java Developer
  • Java Programmer (0-2 yrs of exp.)

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Question

Write a program that prints the numbers from 1 to 20. 

For multiples of 3, print usb instead of the number and for multiples of 5, print device
For numbers which are multiples of both 3 and 5, print usbdevice

Print a new line after each string or number.

Question

Which collection class allows you to access its elements by associating a key with an element's value, and provides synchronization?

Answer
    • java.util.SortedMap

    • java.util.TreeMap

    • java.util.TreeSet

    • java.util.Hashtable

Question

/* Missing Statement ? */
public class TechMocha
{
    public static void main(String[]args)throws Exception
    {
        java.io.PrintWriter out = new java.io.PrintWriter();
        new java.io.OutputStreamWriter(System.out,true);
        out.println("Hello");
    }
}

What line of code should replace the missing statement to make this program compile?

Answer
    • No statement required.

    • import java.io.*;

    • include java.io.*;

    • import java.io.PrintWriter;

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