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In winkelwagenWhat is the primary purpose of the Java Virtual Machine (JVM)?
The primary purpose of the Java Virtual Machine (JVM) is to execute Java bytecode, making Java applications platform-independent.
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What is the difference between JDK, JRE, and JVM?
JDK (Java Development Kit) includes tools for developing Java applications, JRE (Java Runtime Environment) provides libraries and JVM for running Java applications, and JVM (Java Virtual Machine) executes Java bytecode.
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Explain the concept of inheritance in Java.
Inheritance in Java is a mechanism where one class (subclass) inherits the fields and methods of another class (superclass), promoting code reuse and polymorphism.
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What is the purpose of the final keyword in Java?
The final keyword can be used to mark a variable as constant, prevent method overriding, and prevent inheritance of a class.
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What is a constructor in Java?
A constructor is a special method used to initialize objects. It is called when an instance of a class is created.
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What is the difference between == operator and equals() method in Java?
The == operator checks for reference equality, while the equals() method checks for value equality.
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What is polymorphism in Java?
Polymorphism is the ability of a single interface to support multiple underlying forms (data types). It allows methods to be used interchangeably, based on the object they are acting upon.
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What is the purpose of the super keyword in Java?
The super keyword is used to refer to the immediate parent class object, and it can be used to invoke parent class methods and constructors.
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Oefenvragen makenThis set of practice questions is designed to help university students prepare for exams in Java programming. Each question is followed by its answer to facilitate self-assessment and learning.
What is the primary purpose of the Java Virtual Machine (JVM)?
The primary purpose of the Java Virtual Machine (JVM) is to execute Java bytecode, making Java applications platform-independent.What is the difference between JDK, JRE, and JVM?
JDK (Java Development Kit) includes tools for developing Java applications, JRE (Java Runtime Environment) provides libraries and JVM for running Java applications, and JVM (Java Virtual Machine) executes Java bytecode.Explain the concept of inheritance in Java.
Inheritance in Java is a mechanism where one class (subclass) inherits the fields and methods of another class (superclass), promoting code reuse and polymorphism.What is the purpose of the final keyword in Java?
The final keyword can be used to mark a variable as constant, prevent method overriding, and prevent inheritance of a class.What is a constructor in Java?
A constructor is a special method used to initialize objects. It is called when an instance of a class is created.What is the difference between == operator and equals() method in Java?
The == operator checks for reference equality, while the equals() method checks for value equality.What is polymorphism in Java?
Polymorphism is the ability of a single interface to support multiple underlying forms (data types). It allows methods to be used interchangeably, based on the object they are acting upon.What is the purpose of the super keyword in Java?
The super keyword is used to refer to the immediate parent class object, and it can be used to invoke parent class methods and constructors.What is an abstract class in Java?
What is an interface in Java?
How does Java achieve platform independence?
What is method overloading in Java?
What is method overriding in Java?
What is a static method in Java?
What is the purpose of the this keyword in Java?
What is a package in Java?
What is the difference between checked and unchecked exceptions in Java?
What is the purpose of the try-catch block in Java?
What is the finally block in Java?
What is garbage collection in Java?
What is the use of the synchronized keyword in Java?
What is a thread in Java?
What is the difference between ArrayList and LinkedList in Java?
What is the hashCode() method in Java?
What is the toString() method in Java?
What is the instanceof keyword in Java?
What is a lambda expression in Java?
What is the Stream API in Java?
What is a default method in an interface?
What is the purpose of the Optional class in Java?
What is serialization in Java?
What is the transient keyword in Java?
What is the volatile keyword in Java?
What is a singleton class in Java?
What is the purpose of the enum keyword in Java?
What is reflection in Java?
What is the Class class in Java?
What is the difference between public, protected, private, and default access modifiers?
What is dependency injection in Java?
What is the Factory design pattern?
What is the Observer design pattern?
What is the Singleton design pattern?
What is the Builder design pattern?
What is the Decorator design pattern?
What is the Strategy design pattern?
What is the Proxy design pattern?
What is the Adapter design pattern?
What is the Facade design pattern?
What is the Command design pattern?
What is the Template Method design pattern?
What is the Chain of Responsibility design pattern?
What is the Composite design pattern?
What is the Flyweight design pattern?
What is the Mediator design pattern?
What is the Memento design pattern?
What is the State design pattern?
What is the Visitor design pattern?
What is the difference between abstract class and interface in Java?
What is a functional interface in Java?
What is method reference in Java?
What is the Predicate functional interface in Java?
What is the Consumer functional interface in Java?
What is the Supplier functional interface in Java?
What is the Function functional interface in Java?
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