Java Foundations 1Z0-811 Exam Practice Test

This book contains 114 unique practice questions and answers to help you prepare for the Java Foundations Exam, 1Z0-811.

Each question is annotated with the specific objective to which it pertains and links to website content where you can find more information about the topic covered by the question.

This is not a brain dump and these are not the actual questions on the exam, but they are representative of the types of questions and of the information you will need to know to pass the exam.

The practice test contains questions based on the following exam objectives:

What Is Java?

Describe the features of Java
Describe the real-world applications of Java

Java Basics

Describe the Java Development Kit (JDK) and the Java Runtime Environment (JRE)
Describe the components of object-oriented programming
Describe the components of a basic Java program
Compile and execute a Java program

Basic Java Elements

Identify the conventions to be followed in a Java program
Use Java reserved words
Use single-line and multi-line comments in Java programs
Import other Java packages to make them accessible in your code
Describe the java.lang package

Working with Java Data Types

Declare and initialize variables including a variable using final
Cast a value from one data type to another including automatic and manual promotion
Declare and initialize a String variable

Working with Java Operators

Use basic arithmetic operators to manipulate data including +, -, *, /, and %
Use the increment and decrement operators
Use relational operators including ==, !=, >, >=, <, and <=
Use arithmetic assignment operators
Use conditional operators including &&, ||, and ?
Describe the operator precedence and use of parenthesis

Working with the String Class

Develop code that uses methods from the String class
Format Strings using escape sequences including %d, %n, and %s

Working with the Random and Math Classes

Use the Random class
Use the Math class

Using Decision Statements

Use the decision making statement (if-then and if-then-else)
Use the switch statement
Compare how == differs between primitives and objects
Compare two String objects by using the compareTo and equals methods

Using Looping Statements

Describe looping statements
Use a for loop including an enhanced for loop
Use a while loop
Use a do-while loop
Compare and contrast the for, while, and do-while loops
Develop code that uses break and continue statements

Debugging and Exception Handling

Identify syntax and logic errors
Use exception handling
Handle common exceptions thrown
Use try and catch blocks

Arrays and ArrayLists

Use a one-dimensional array
Create and manipulate an ArrayList
Traverse the elements of an ArrayList by using iterators and loops including the enhanced for loop
Compare an array and an ArrayList

Classes and Constructors

Create a new class including a main method
Use the private modifier
Describe the relationship between an object and its members
Describe the difference between a class variable, an instance variable, and a local variable
Develop code that creates an object’s default constructor and modifies the object’s fields
Use constructors with and without parameters
Develop code that overloads constructors

Java Methods

Describe and create a method
Create and use accessor and mutator methods
Create overloaded methods
Describe a static method and demonstrate its use within a program