Core Java Practice Flashcards

Fill-in-the-blank review flashcards based on the Core Java lecture notes, covering core concepts, memory, OOP, exceptions, and Maven.

In the Java execution pipeline, Java source code is compiled into bytecode before being executed by the __________.

JVM (Java Virtual Machine)

The JDK contains tools needed to develop Java programs (including the compiler), whereas the JRE consists of the JVM plus __________ needed to run Java applications.

libraries

In Windows environment variable setup, the __________ variable points to the root directory location of the installed JDK.

JAVA_HOME

Introduced in JDK 9, __________ is an interactive Read-Evaluate-Print Loop (REPL) tool for prototyping and learning Java.

JShell

According to the Java primitive data types table, the range of the byte type is __________.

-128 to 127

Variables declared with the __________ modifier cannot have their value changed once they are initialized.

final

When formatting text using System.out.printf(), the specifier used to represent integers is __________.

%d

In the Java arithmetic operators table, the % symbol represents the __________ operator, which returns the remainder of a division.

Modulus

Unlike StringBuilder, the __________ class performs mutable string operations and is thread-safe.

StringBuffer

In Java memory management, method calls and local variables are stored on the Stack, while instantiated objects and the String Pool are stored on the __________.

Heap

The built-in Java package that provides core classes and is automatically imported into every Java program is __________.

java.lang

The __________ access modifier is the most restrictive and makes members accessible only within their declaring class.

private

Members declared with the __________ keyword belong to the class itself rather than to individual instances.

static

According to the Scanner methods reference, the method used to take an entire line of input as a String is __________.

nextLine()

The OOP pillar that hides an object's internal fields and restricts direct access using getters and setters is __________.

Encapsulation

Java supports single, multilevel, and hierarchical inheritance, but does NOT support __________ class inheritance.

multiple

Declaring multiple methods in the same class with the same name but different parameter lists is known as Method __________.

Overloading

In the exception hierarchy diagram, subclasses of RuntimeException are classified as __________ exceptions.

unchecked

In a Maven pom.xml file, the combination of groupId, artifactId, and version is called the __________.

artifact coordinates

The Java Reflection API, which allows programs to examine and manipulate their own structure at runtime, is found in the __________ package.

java.lang.reflect