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Static methods are a cornerstone of object-oriented programming in Java. Unlike regular methods tied to specific objects, static methods belong to the class itself. This unique characteristic offers a multitude of benefits. Static methods promote code organization by allowing you to group helper functions or utility methods directly within the class definition, keeping your code clean and modular.
Furthermore, static methods optimize memory usage. Since they are not tied to individual objects, they are loaded into memory only once when the class is first referenced, improving efficiency. This blog post delves into the world of static methods with an engaging quiz!
The quiz will assess your understanding of core concepts like creating and calling static methods, their role in memory management, and best practices for their use. Whether you’re a seasoned Java developer or just starting out, this quiz serves as a valuable tool to solidify your grasp of static methods and propel you on your programming journey! So, dive in, challenge yourself, and embrace the power of static methods in Java!
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Question 1 of 15
1. Question
Which of the following is the correct way to invoke a static method ?
CorrectIncorrect -
Question 2 of 15
2. Question
class Method {
static void square(int a)
{
return(a*a);
}
public static void main ( String args [ ] )
{
System.out.println(square(5));
}
}
What is the output of the program ?
CorrectIncorrect -
Question 3 of 15
3. Question
class Function {
void display()
{
system.out.println(“Non-static method”);
}
}
class Main {
public static void main ( String args [ ] )
{
Function.display();
}
}
What will be the output of the program ?
CorrectIncorrect -
Question 4 of 15
4. Question
Which of the following cannot be done using the static methods in java?
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Question 5 of 15
5. Question
class One {
static addition(int a , int b)
{
return a+b;
}
static subtraction(int a , int b)
{
return a-b;
}
public static void main ( String args [ ] )
{
System.out.println(addition(2,3)+”,”+subtraction(3,2));
}
}
What will be the output of the program ?
CorrectIncorrect -
Question 6 of 15
6. Question
class A {
static method1()
{
System.out.println(“Static method”);
}
}
class Main {
public static void main ( String args [ ] )
{
method1();
}
}
What is the error in the program ?
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Question 7 of 15
7. Question
Which of the following keywords raise an error in static methods ?
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Question 8 of 15
8. Question
class Text {
String name = “ ”;
static void display(string a)
{
name = a;
System.out.println(name);
}
public void print(String b)
{
name = b;
System.out.println(name);
}
}
class Main {
public static void main ( String args [ ] )
{
Text.display(“DataFlair”);
Text t = new Text();
t.print(“Webservices”);
}
}
What should be the output of the program ?
CorrectIncorrect -
Question 9 of 15
9. Question
class Main {
public static void main ( String args [ ] )
{
static void method(int a , int b , int c )
{
return a*b*c*;
}
method(10.9.8);
}
}
What will be the output of the program ?
CorrectIncorrect -
Question 10 of 15
10. Question
Which of the following is the syntax for invoking static methods ?
CorrectIncorrect -
Question 11 of 15
11. Question
class Objects {
Static void display()
{
System.out.println(“static class method”);
}
}
class Main {
public static void main ( String args [ ] )
{
Objects obj = new Objects();
obj.display();
}
}
What is the output of the program ?
CorrectIncorrect -
Question 12 of 15
12. Question
class Method {
int b;
Method(static int a)
{
b = this.a;
system.out.println(b);
}
public static void main ( String args [ ] )
{
Method m = new Method(10);
}
}
What is the output of the program ?
CorrectIncorrect -
Question 13 of 15
13. Question
Which of the following concepts are used in static methods ?
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Question 14 of 15
14. Question
class StaticMethods {
public static void main ( String args [ ] )
{
static int b = 10;
static void value( b)
{
Static int a = b*b;
}
System.out.println(a);
}
}
What is the output of the program ?
CorrectIncorrect -
Question 15 of 15
15. Question
class Sample {
static void calculate( int x )
{
System.out.println(3.14*x*x);
}
}
class Main {
public static void main ( String args [ ] )
{
Sample.calculate(4);
}
}
What will be the output of the program ?
CorrectIncorrect
Summary:
Congratulations on completing the Java Static Methods Quiz! By attempting this quiz, you’ve actively engaged with core concepts like invoking static methods using the class name, understanding their benefits for code reusability and memory management, and recognizing scenarios where static methods are not applicable.
Remember, effective learning is an ongoing process. Explore additional resources beyond the quiz, such as online tutorials and practice problems. Consider participating in online communities to connect with other Java developers and broaden your knowledge. By continuously learning and applying your understanding, you’ll become a confident and proficient Java programmer.