JAVA
QUESTIONS
QUESTIONS
WHAT KEYWORD IS USED TO CREATE AN OBJECT IN JAVA ?
new
WHICH DATA STRUCTURE USES FIFO PRICIPLE ?
QUEUE
WHAT SHAPE HAS EXACTLY FOUR EQUAL SIDES AND FOUR RIGHT ANGLES?
SQUARE
WHICH COMPONENT PERFORMS ARITHMETIC AND LOGICAL OPERATIONS IN A COMPUTER?
ALU
WHICH IS THE LONGEST RIVER IN THE WORLD ?
THE NILE - AFRICA
WHAT IS THE DEFAULT VALUE OF AN int INSTANCE VARIABLE ?
ZERO
WHAT DATA STRUCTURE IS USED IN DEPTH FIRST SEARCH ?
STACK
IF ALL ROSES ARE FLOWERS AND SOME FLOWERS ARE POISONOUS, MUST ALL ROSES BE POISONOUS ?
NO
WHAT TYPE OF SOFTWARE MANAGES HARDWARE RESOURCES ?
OPERATING SYSTEM
WHAT IS THE CAPITAL CITY OF GERMANY ?
BERLIN
WHICH METHOD COMPARES THE CONTENT OF TWO OBJECTS ?
equals()
Homogeneous data elements stored in?
Array
I’m tall when I’m young, and I’m short when I’m old. What am I?
CANDLE
WHICH PROTOCOL IS USED TO SECURELY TRANSFER WEB DATA ?
HTTPS
WHO PAINTED THE "MONA LISA"?
Leonardo Da Vinci
WHICH JAVA FEATURE ALLOWS A SUBCLASS TO PROVIDE A SPECIFIC IMPLEMENTATION OF A SUPERCLASS METHOD ?
OVERRIDING
WHICH ALGORITHM TECHNIQUE SOLVES THE PROBLEM BY COMBINING SOLUTIONS TO SUBPROBLEMS?
DYNAMIC PROGRAMMING
A BAT AND BALL COSTS ₨.110. THE BAT COSTS ₨.100 MORE THAN THE BALL. HOW MUCH DOES THE BALL COST ?
Let x be the cost of the ball in rupees.
Then the bat costs x + 100.
Their total cost is x + (x + 100) = 110.
Solving: 2x + 100 = 110 → 2x = 10 → x = 5.
The ball costs ₹5, and the bat costs ₹105.
WHAT CONDITION OCCURS WHEN TWO PROCESSES WAIT INDEFINITELY FOR RESOURCES?
DEADLOCK
Who is known as the Missile Man of India?
Dr.Avul Pakir Jainulabdeen Abdul Kalam
Who invented Java?
James Gosling
WHAT IS THE WORST-CASE TIME COMPLEXITY OF THE QUICK SORT ALGORITHM ?
O(n^2)
What has a head, a tail, is brown, and has no legs?
COIN
WHICH METHOD OF MEMORY ALLOCATION DIVIDES MEMORY INTO FIXED-SIZE BLOCKS?
PAGING
What technique removes inactive programs from RAM?
Swapping