Java String Data Type and Input Statement Lecture

The purpose of the Scanner class in Java is to obtain information that is typed in at the keyboard.

To import the Scanner package in Java, you use the statement 'import java.util.Scanner'.

The nextInt() method is used to input the value of an integer.

<p>To create a Scanner object in Java, you use the statement 'Scanner keyboard = new Scanner(System.in);'.</p> Signup and view all the answers

<p>The purpose of the nextLine() method in the Scanner class is to input a sentence.</p> Signup and view all the answers

<p>if statement = Consists of a boolean expression followed by one or more statements. If ... else statement = An if statement can be followed by an optional else statement, which executes when the boolean expression is false. nested if statement = Using one if or else if statement inside another if or else if statement(s). switch-case statement = A statement used to make multiple choices in a program.</p> Signup and view all the answers

<p>Java = Provides decision making statements like if, if-else, nested if, and switch-case. Python = Commonly used for general-purpose programming. JavaScript = Frequently used for client-side scripting in web applications. C++ = Known for its use of decision-making structures like if, if-else, and switch-case.</p> Signup and view all the answers

<p>Sequence and selection = Explaining the difference between these two concepts. Falling down in switch-case = A behavior in switch-case where multiple case labels are executed until a break statement is encountered. Break statement = A statement used to terminate the execution of a loop or switch-case statement. Boolean expression = An expression that evaluates to either true or false.</p> Signup and view all the answers

<p>Using an if-else statement to make a choice between two options = Executing one set of statements when the condition is true and another set when the condition is false. Using a switch-case statement to make multiple choices = Selecting from multiple options based on the value of an expression. Using nested if-else statements to make multiple choices = Creating a series of conditional checks within other conditional checks. Using an if statement to make a single choice in a program = Executing a block of code only if the specified condition is true.</p> Signup and view all the answers

<p>Executing one or more statements based on a boolean expression = if statement Choosing between two options based on a condition = If ... else statement Terminating the execution of a loop or switch-case statement = Break statement Making multiple choices based on different case labels = switch-case statement</p> Signup and view all the answers