Java Control Statements Quiz

A class is a blueprint or template that defines the structure and behavior of an object.

A method is a block of code that performs a specific task within a class.

The main method is the entry point for execution of a Java program.

The code block within a method defines the instructions that the method performs.

A Java program executes a sequence of instructions, which are organized into classes and methods.

Java programs are compiled into bytecode, which is then interpreted by the Java Virtual Machine (JVM).

The javac command compiles a Java source file (e.g., Welcome1.java) into a bytecode file (e.g., Welcome1.class).

The java command executes (runs) a compiled Java program.

A Java keyword that introduces a conditional block of code. If the condition evaluates to true, the code block executes. Otherwise, it's skipped.

A Java keyword used in conjunction with the if statement to provide an alternative code block to execute when the if condition is false.

A conditional structure where an if statement is nested within another if statement. This allows for multiple levels of decision-making.

A situation in nested if statements where it's unclear which if statement an else statement belongs to. This can lead to unexpected behavior due to improper indentation or structure.

A specific type of if statement that aims to determine if a number is even or odd, typically by checking if the number is divisible by 2.

A data type in Java that stores whole numbers. Examples include 1, 2, 3, 4, and -1.

The Java 'switch' statement is used to execute different blocks of code based on the value of an expression.

The 'switch' statement evaluates an expression and compares its value to the values specified in 'case' labels. If a match is found, the corresponding code block is executed.

A 'case' label is used to define a specific value that the expression should match. Only one 'case' block will be executed.

The 'break' statement is optional in a 'switch' statement. If 'break' is missing, the code execution will continue to the next case, even if there's a match.

The 'default' label is used to provide a block of code to be executed if none of the 'case' values match the expression.

A special statement in Java that allows you to execute different blocks of code based on the value of a variable.

A 'case' statement within a 'switch' statement that specifies a possible value for the expression being evaluated. The code following the 'case' will execute if the expression matches the value.

A keyword that signals to the switch statement to stop executing further cases once a match is found. It prevents the code from running through all subsequent cases.

A default case is used within a switch statement to provide a block of code to execute when none of the other cases match the evaluated expression.

A Java operator that concisely evaluates an expression and returns one value if the expression evaluates to true, and another value if it evaluates to false.

The conditional operator requires three operands: an expression, a value to return if the expression is true, and a value to return if it's false.

The conditional operator provides a concise and efficient way to write simple if-else statements.

The conditional operator should be used for straightforward conditions, while complex logic is better handled with if-else statements for clarity.