Java Control Statements Chapter 1

If statement and Switch statement

To evaluate a condition and divert the control of the program accordingly

if(condition) { //code to be executed if the condition is true }

<p>A Boolean value, either true or false</p> Signup and view all the answers

<ol> <li>Simple if statement, 2. if-else statement, 3. if-else-if ladder, 4. nested if statement</li> </ol> Signup and view all the answers

<p>The code block within the curly braces { } immediately following the if statement is executed</p> Signup and view all the answers

<p>Control flow statements</p> Signup and view all the answers

<p>Decision Making statements, Loop statements, and Jump statements</p> Signup and view all the answers

<p>To make decisions based on certain conditions</p> Signup and view all the answers

<p>They form the backbone of algorithmic logic and are fundamental to the structure of most programming languages</p> Signup and view all the answers

<p>if statements and switch statement</p> Signup and view all the answers

<p>They provide the necessary flexibility to create dynamic and responsive programs that can adapt to different inputs and conditions</p> Signup and view all the answers

<p>if (condition) { // block of code to be executed if the condition is true } else { // block of code to be executed if the condition is false }</p> Signup and view all the answers

<p>Good evening.</p> Signup and view all the answers

<p>To specify a block of code to be executed if the condition is false.</p> Signup and view all the answers

<p>By using the modulo operator <code>%</code>, for example: <code>if(a%2==0){ System.out.println(&quot;even number&quot;); } else{ System.out.println(&quot;odd number&quot;); }</code></p> Signup and view all the answers

<p>To specify a new condition if the first condition is false.</p> Signup and view all the answers

<p>x + y is greater than 20</p> Signup and view all the answers

<p>The purpose of the <code>else if</code> statement is to check another condition if the previous condition is false, allowing for multiple conditions to be evaluated. It differs from a simple <code>if</code> statement because it allows for multiple alternative paths to be taken, whereas a simple <code>if</code> statement only has one alternative path.</p> Signup and view all the answers

<p>The output is 'Good day.'</p> Signup and view all the answers

<p>The purpose of the <code>else</code> clause is to specify a default action to be taken if none of the previous conditions are true. It is used to catch any conditions that are not explicitly handled by the <code>if</code> and <code>else if</code> clauses.</p> Signup and view all the answers

<p>The output is 'Invalid Choice'.</p> Signup and view all the answers

<p>The logical flow of an <code>if-else if</code> statement is that the conditions are evaluated in order, and the first true condition is executed. If none of the conditions are true, the <code>else</code> clause is executed.</p> Signup and view all the answers

<p>The use of <code>else if</code> statements improves the readability and maintainability of code by making it clear and explicit how the code should behave under different conditions, and by reducing the complexity of the code. It also allows for easier modification and extension of the code.</p> Signup and view all the answers

<p>The code block is skipped, and the program continues to execute the next statement following the if block.</p> Signup and view all the answers

<p>Age is greater than 18</p> Signup and view all the answers

<p>The else block is executed if the condition of the if-block is evaluated as false.</p> Signup and view all the answers

<p>x is greater than y</p> Signup and view all the answers

<p>x + y is greater than 20</p> Signup and view all the answers

<p>An if statement only executes the code block if the condition is true, while an if-else statement has an additional else block that is executed if the condition is false.</p> Signup and view all the answers