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Java Quiz: Data Types and Variables (Beginner) - 1
Are you ready to test your understanding of Java fundamentals? This beginner-friendly Java quiz focuses on data types, variables, syntax, and common concepts every developer should know. Whether you're preparing for an exam, brushing up on Java basics, or simply looking to challenge yourself, these multiple-choice questions will help you evaluate your core knowledge. Answer each question carefully, then check your responses to solidify your understanding of Java programming essentials.
Select the right answer for below questions:
What is the default value of a local variable in Java?
0
null
undefined
None of the above
undefined
What is the range of the short data type in Java?
-32768 to 32767
-2147483648 to 2147483647
-128 to 127
None of the above
-32768 to 32767
What is the correct syntax for declaring a variable in Java?
var x;
int x;
x as int;
None of the above
int x;
What is the difference between a final variable and a constant in Java?
There is no difference, both terms can be used interchangeably.
A constant must be defined in all caps, while a final variable does not have this requirement.
A constant is a variable declared with the final keyword, while a final variable is a variable that can only be assigned once.
None of the above
A constant is a variable declared with the final keyword, while a final variable is a variable that can only be assigned once.
What is the correct syntax for declaring a class in Java?
class myClass
class MyClass
Class myClass
None of the above
class MyClass
What is the difference between a static variable and a non-static variable in Java?
A static variable is shared among all objects of a class, while a non-static variable is unique to each object.
A static variable is unique to each object, while a non-static variable is shared among all objects of a class.
There is no difference between the two.
None of the above.
A static variable is shared among all objects of a class, while a non-static variable is unique to each object.
What is the range of the byte data type in Java?
-32768 to 32767
-128 to 127
-2147483648 to 2147483647
None of the above
-128 to 127
What is the default value of a boolean variable in Java?
FALSE
TRUE
0
null
FALSE
What is the correct syntax for declaring an array in Java?
int[] myArray;
myArray[] as int;
var myArray[];
None of the above
int[] myArray;
What is the difference between a public and private variable in Java?
A public variable can be accessed from anywhere in the program, while a private variable can only be accessed within the same class.
A private variable can be accessed from anywhere in the program, while a public variable can only be accessed within the same class.
There is no difference between the two.
None of the above.
A public variable can be accessed from anywhere in the program, while a private variable can only be accessed within the same class.
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{"qz1-538921":"undefined","qz1-538922":"-32768 to 32767","qz1-538923":"int x;","qz1-538924":"A constant is a variable declared with the final keyword, while a final variable is a variable that can only be assigned once.","qz1-538925":"class MyClass","qz1-538926":"A static variable is shared among all objects of a class, while a non-static variable is unique to each object.","qz1-538927":"-128 to 127","qz1-538928":"FALSE","qz1-538929":"int[] myArray;","qz1-538930":"A public variable can be accessed from anywhere in the program, while a private variable can only be accessed within the same class."}
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