General Study Notes Quiz

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Questions and Answers

What was Java originally called?

Oak (correct)

C++

WebRunner

Bytecode

Who developed Java and which company did they work for?

Linus Torvalds at IBM

Bjarne Stroustrup at Oracle

James Gosling at Sun Microsystems (correct)

Guido van Rossum at Microsoft

What is the file extension for Java source code files?

.byte

.java (correct)

.exe

.class

What do you call the compiled format of Java files?

Bytecode (B) Signup and view all the answers

What is a key feature of Java that relates to its safety and stability?

Robust and secure (A) Signup and view all the answers

Which internet browser was the first created in Java?

HotJava (D) Signup and view all the answers

Which feature of Java aims at being usable across different platforms?

Architecture neutral and portable (B) Signup and view all the answers

What was Java initially intended to be developed for?

Control of electronic devices (C) Signup and view all the answers

What functionality does the NetBeans Profiler provide to developers?

Monitoring of thread state, CPU performance, and memory usage. (A) Signup and view all the answers

Which feature does NetBeans provide to assist in writing codes for Java Micro Edition?

Mobility Pack. (C) Signup and view all the answers

What is the main advantage of using the GUI Builder Matisse in NetBeans?

It eliminates the need to understand Swing layout managers. (D) Signup and view all the answers

What does the term 'architecture neutral' mean in Java technology?

Java technology supports applications in heterogeneous network environments. (D) Signup and view all the answers

What does the NetBeans features relating to 'window, menu, settings management' refer to?

Platform services. (B) Signup and view all the answers

Which phase of a Java program is described as simple, incremental, and lightweight?

The linking phase (D) Signup and view all the answers

What kind of components does the Component Palette in NetBeans include?

Both Swing and AWT components. (B) Signup and view all the answers

What is the primary role of the Java Virtual Machine (JVM)?

To run Java bytecodes on any machine. (A) Signup and view all the answers

Which of the following best describes the Java compiler's output?

Java bytecode files (B) Signup and view all the answers

What unique debugging mode does the Mobility Pack allow in NetBeans?

On-Phone debugging. (B) Signup and view all the answers

Which of the following statements is true about Java's performance perception?

Java applications are interpreted, yet users perceive them as responsive. (B) Signup and view all the answers

Which of the following tools assists users in generating XML and CSS codes within NetBeans?

XML Productivity Tools Wizards. (B) Signup and view all the answers

What programming construct does the Java development environment typically use to create applications?

Bytecode files (C) Signup and view all the answers

What is the purpose of the automatic code generation feature in the GUI Builder of NetBeans?

To convert GUI designs into JavaBeans code automatically. (A) Signup and view all the answers

What does the abbreviation J2SDK stand for?

Java 2 Standard Development Kit (C) Signup and view all the answers

Which program is responsible for transforming Java source code into bytecode?

Javac (B) Signup and view all the answers

What is the primary purpose of the SortedSet interface?

To provide a total ordering on its elements (D) Signup and view all the answers

How are the elements of a TreeSet stored?

In a binary search tree in ascending order (D) Signup and view all the answers

Which of the following is NOT a standard output stream created automatically in Java?

System.console (C) Signup and view all the answers

What is the main characteristic of the OutputStream class in Java?

It is an abstract class for output streams of bytes (C) Signup and view all the answers

Which package contains all classes needed for input and output operations in Java?

java.io (A) Signup and view all the answers

What is the main purpose of using streams in Java for I/O operations?

To facilitate fast data processing operations (B) Signup and view all the answers

Which of the following statements is correct regarding the TreeSet?

TreeSet does not allow null elements (B) Signup and view all the answers

What defines a Stream in Java?

A sequence of data that can be processed (C) Signup and view all the answers

What will be the output of the statement 'System.out.println("Lamp switch-on " + result);' after executing 'result = lampY || lampX;'?

Lamp switch-on true (C) Signup and view all the answers

What distinguishes the bitwise OR operator from the logical OR operator?

Bitwise OR copies bits if they exist in either operand, while logical OR results in true if any operand is true. (D) Signup and view all the answers

In the context of the code provided, what is the purpose of the 'break' statement?

To terminate the loop execution prematurely. (A) Signup and view all the answers

What does the operator '%' signify in the provided context?

It divides the left-hand operand by the right-hand operand and returns the remainder. (D) Signup and view all the answers

Given the code snippet with 'int p=0; while (p 0; i--)', what could potentially cause an error in the code?

The while loop condition is incorrectly formatted. (D) Signup and view all the answers

What will be the value of variable 'e' after the execution of 'boolean b = (c == 1) || (++e < 100);'?

52 (A) Signup and view all the answers

Which option correctly illustrates the relationship between the float arrays f1, f2, and f3?

f1 == f3 (B) Signup and view all the answers

What will be printed when executing the following command in the program: 'System.out.println("My Array length is: " + my_array.length);'?

3 (B) Signup and view all the answers

What does the boolean expression '(e++ < 100) || (c == 1)' evaluate to when e is 52?

true (A) Signup and view all the answers

What is the outcome of the statement 'long x = 42;' followed by 'f1 = 42.0f;'?

f1 holds a float type value (B) Signup and view all the answers

Which statement about decrement operators is true?

They decrease the value of a variable by a fixed increment. (B) Signup and view all the answers

What is the purpose of the break statement in loops?

To exit the loop prematurely. (D) Signup and view all the answers

How many elements are initialized in the 'student_marks' array?