Podcast
Questions and Answers
The word import in a Java program is a keyword reserved by the language.
True
A byte can contain either 32 or 64 bits.
False
According to the Java standard naming convention, class names and variables must start with an uppercase letter and must contain a number.
False
Each byte is assigned a unique number known as a bytecode.
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In computers, data is stored in a hexadecimal form, which is denoted as 0x00-0x11.
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What is the value of b after executing the specified statements with x = 10, y = 7, z = 10?
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Local variables are meant for use in the method they are declared.
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Which of the following values can be passed to a method that has an int parameter variable? (a) int (b) short (c) double (d) A and B (e) all of the above
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When you pass an argument to a method, what does it do?
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What must the method header specify?
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What does the phrase divide and conquer describe?
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What happens to the values of local variables between method calls?
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What can local variables be initialized with?
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How many 'USA' are displayed from the given code fragment?
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Study Notes
Java Keywords and Data Types
- The keyword
importis reserved in Java and cannot be used for other purposes. - A byte consists of 8 bits; it cannot contain 32 or 64 bits.
- Java naming conventions dictate that class names should start with an uppercase letter, while variable names should start with a lowercase letter and cannot contain numbers at the beginning.
Bytecode and Data Storage
- Each byte does not have a unique identification called "bytecode"; instead, bytecode refers to the compiled code executed by the Java Virtual Machine.
- Data in computers is typically stored in binary format, not strictly in hexadecimal denoted as 0x00-0x11.
Boolean and Conditional Statements
- The boolean variable's value is determined by executing certain conditional statements, which can affect its outcome.
- If conditionals are not satisfied, the default value for the boolean may remain unchanged.
Local Variables
- Local variables are accessible only within the method they are declared in and do not retain their values between method calls.
- Local variables must be initialized with constant values, parameters passed into the method, or results from arithmetic operations.
Method Parameters and Arguments
- Parameters in a method header must specify both the parameter types and the return type.
- Arguments passed to a method initialize the specified parameters, allowing for data interchange between methods.
Problem-Solving Approach
- The phrase "divide and conquer" refers to breaking down a complex problem into manageable pieces to simplify the solution process.
Loop Control
- A while loop that continues under certain conditions can lead to infinite iterations if the control variable is not properly updated. In a provided code fragment, the statement
"USA"is printed infinitely.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge with these flashcards focused on the fundamentals of Java programming as part of the CSCE 111 course. This quiz includes true or false questions that challenge your understanding of key concepts such as keywords and naming conventions in Java. Perfect for final exam preparation!
