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Questions and Answers
Which of the following loop statements is used to execute a block of code repeatedly for each item of a collection?
Which of the following loop statements is used to execute a block of code repeatedly for each item of a collection?
What is the purpose of the break statement in Java?
What is the purpose of the break statement in Java?
What is the difference between a while loop and a do-while loop in Java?
What is the difference between a while loop and a do-while loop in Java?
What is the purpose of the continue statement in Java?
What is the purpose of the continue statement in Java?
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Which of the following statements is used to control the flow of Java code?
Which of the following statements is used to control the flow of Java code?
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What is the purpose of the for-each loop in Java?
What is the purpose of the for-each loop in Java?
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Which loop will execute the body of the loop at least once?
Which loop will execute the body of the loop at least once?
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What is the purpose of the break statement in Java?
What is the purpose of the break statement in Java?
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What is the difference between the while loop and the do-while loop?
What is the difference between the while loop and the do-while loop?
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Which of the following is an example of a jump statement in Java?
Which of the following is an example of a jump statement in Java?
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What is the purpose of the continue statement in Java?
What is the purpose of the continue statement in Java?
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What is the purpose of the 'break' statement in a switch statement?
What is the purpose of the 'break' statement in a switch statement?
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What is the primary difference between a while loop and a do-while loop?
What is the primary difference between a while loop and a do-while loop?
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Which of the following is NOT a type of loop control statement in Java?
Which of the following is NOT a type of loop control statement in Java?
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What is the purpose of a loop in programming languages?
What is the purpose of a loop in programming languages?
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What is the syntax of a switch statement in Java?
What is the syntax of a switch statement in Java?
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What is the primary use of a switch statement in Java?
What is the primary use of a switch statement in Java?
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Study Notes
Introduction to Java and Object Oriented Programming
- Java provides conditional statements to control the flow of code.
- Conditional statements are fundamental features of Java, providing a smooth flow of program.
Types of Conditional Statements
- Decision Making statements:
- if statement
- switch statement
- Loop statements:
- do while loop
- while loop
- for loop
- for-each loop
- Jump statements:
- break statement
- continue statement
Decision Making Statements
- If Statement:
- Evaluates a condition and executes a block of code if true.
- Three ways to execute loops in Java.
Loop Statements
- For loop:
- Used to run a block of code for a certain number of times.
- Syntax:
for (initialization; condition; increment/decrement) { code block } - Example: Simple for loop, Nested for loop
- While loop:
- Used to run a specific code until a certain condition is met.
- Syntax:
while (condition) { code block } - Example: While loop
- Do-while loop:
- Similar to while loop, but the body of the loop is executed once before the test expression is checked.
- Syntax:
do { code block } while (condition)
Jump Statements
- Break statement:
- Used to terminate the execution of the nearest looping statement or switch statement.
- Widely used with switch statement, for loop, while loop, do-while loop.
- Example: Break statement
- Continue statement:
- Used to skip the rest of the code inside the loop and move to the next iteration.
Switch Statement
- Contains multiple blocks of code called cases and a single case is executed based on the variable being switched.
- Similar to if-else-if statements.
- Syntax:
switch(expression) { case x: code block break; case y: code block break; default: code block } - Example: Switch statement
Tasks and Examples
- Task 1: Declare variables and initialize integer variables with values, add them, and check if sum is greater than 20.
- Task 2: Check if a number is divisible by 5 and 11.
- Task 3: Check if a number is even or odd.
- Task 4: Create a simple calculator using switch statement.
- Task 5: Find the maximum of two numbers using switch statement.
- Task 6: Print all even numbers between 1 to 100 using for loop.
- Task 7: Calculate the factorial of a number.
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Description
Test your understanding of conditional statements in Java, including decision making statements, types of conditional statements, and error handling. Review variables, data types, and operators in Java programming. This quiz is a revision topic for Herald College, University of Wolverhampton students.
