Question 1
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Identify whether the below statement is True or False: The hierarchy of Reader/Writer class is character-oriented and InputStream/OutputStream class is byte-oriented
Select one:
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Question 2
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While garbage collection the java run time system automatically calls ______________method.
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Question 3
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Choose all the statement(s) that are valid.
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Question 4
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Predict the output:
public class Topper
{
public static void check() {
this.display();
}
public static void display() {
System.out.println("Welcome to Java");
}
public static void main(String args []) {
check();
}
}
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Question 5
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Which of the following are not Java keyword?
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Question 6
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What will happen if you attempt to compile and run the following code?
Integer i=new Integer(15);
Long l=new Long (10);
System.out.println(i + l);
int check=1;
System.out.println(check + i);
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16
Question 7
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Predict the output:
class One
{
void calculate(int a, int b)
{
System.out.println("Class One");
}
}
class Two extends One
{
@Override
void calculate(int a, int b)
{
System.out.println("Class Two");
}
}
class Three extends Two
{
@Override
void calculate(int a, int b)
{
System.out.println("Class Three");
}
}
public class Test
{
public static void main(String[] args)
{
One one = new Two();
one.calculate(10, 20);
Two two = (Two) one;
two.calculate(50, 100);
Three three = (Three) two;
three.calculate(100, 200);
}
}
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Class Two
java.lang.ClassCastException
Question 8
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On exceuting the following code predict the output
public class TestMain {
public static void main(String args[ ])
{
try
{
int x=10;
throw(new Exception("Throw new Exception"));
}
catch(Exception e)
{
System.out.print("Exception caught in catch block. ");
return;
}
finally
{
System.out.println("Exception caught in finally block.");
}
}
}
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Question 9
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String str= new String("Hello World");
Which of the following calls are valid?
(A) str.trim()
(B) str.replace('o', 'A')
(C) str.substring(3)
(D) str.toUppercase()
(E) str.setCharAt(1,'A')
(F) str.append("xyz")
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Question 10
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Select the true statement ?
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Question 11
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How do we change the state of an object ?
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Question 12
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How does the different section of an application communicate in an OO approach ?
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Question 13
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Select the principle that best describes the given scenario. An air-condition can be operated using the button or remote control.
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Question 14
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Select the benefits of OOP ?
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Question 15
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Select the multiplicity between passenger and train reservation ticket? What is the multiplicity of passenger ?
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Question 16
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The given snippet describes ________________-
BEGIN
DECLARE marks[10]
DECLARE number
SET number TO 0
FOR index=0 TO 9
INPUT array[index]
END FOR
number= marks[0]
FOR index=0 TO 9
IF marks[index] > number THEN
number =marks[index]
END IF
END FOR
PRINT number
END
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Question 17
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_________ is not the exact code for solving the problem but it would give us an idea of how the problem is going to be solved.
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Question 18
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SPOT THE ERROR:
Observe the below algorithm to find the average of three numbers.
Step1: Start
Step2: Get num1, num2, num3
Step3: Add num1, num2, num3 and store it in Sum
Step4: Average=sum%3
Step5: Display Sum and Average
Step6: Stop
Identify the incorrect step(if any)
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Step 4
Question 19
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Carefully read the question and answer accordingly. From the list of input elements one element is taken during each iteration to find its corresponding position. This idea of sorting is said to be _______.
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Question 20
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Carefully read the question and answer accordingly. Which data structure is said to be linear data structure?
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Question 21
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What is the time complexity of below function?
void cal_fun(int m,int a[])
{
int i=0,j=0;
for(;i<m;++i)
while(j<m && a[i] < a[j])
j++;
}
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Question 22
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From the given options identify the appropriate algorithm that has the lowest worst-case complexity?
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Question 23
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Time complexity of an algorithm signifies the total time required by the algorithm to complete its execution with provided resources. State True or False.
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Question 24
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State true or false.
Configuration management is important only during the coding phase
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Question 25
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The SRS document should be
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