What is a compiler?
A program that translates high-level code into machine code.
What is a class in Java?
A blueprint for creating objects.
What is a string literal?
An instance of the String class, representing a sequence of characters.
What is a primitive data type?
A basic data type that stores data directly in memory.
What is a variable?
A container for storing data values.
What is casting?
Changing the data type of a value.
What is the assignment operator?
The '=' symbol, used to assign a value to a variable.
What is a boolean?
A primitive data type with a value of either 'true' or 'false'.
What is the main method?
The entry point of a Java program.
What is the modulo operator?
The '%' symbol, which returns the remainder of a division.
What does the following code output?
```java
int x = 5;
double y = 2.0;
System.out.println(x / y);
```
2.5
What does the following code output?
```java
int a = 10;
a %= 3;
System.out.println(a);
```
1
What does the following code output?
```java
int num = 7;
num++;
System.out.println(num);
```
8
What does the following code output?
```java
double price = 19.99;
int roundedPrice = (int) price;
System.out.println(roundedPrice);
```
19
What does the following code output?
```java
int result = 5 + 3 * 2;
System.out.println(result);
```
11
Identify the error in the following code:
```java
int number = 4.5;
System.out.println(number);
```
Cannot assign a double value to an int variable. Requires explicit casting.
What does the following code output?
```java
System.out.println(5 / 2);
System.out.println(5.0 / 2);
```
2
2.5
What does the following code output?
```java
int x = 8;
x /= 2;
System.out.println(x);
```
4
What does the following code output?
```java
boolean flag = true;
System.out.println(!flag);
```
false
What does the following code output?
```java
int count = 10;
count -= 5;
System.out.println(count);
```
5
How are primitive data types used in real-world applications?
int: Storing ages, counts, or quantities | double: Storing prices, temperatures, or measurements | boolean: Storing flags, status indicators, or conditions.
How is the Scanner class applied in real-world scenarios?
Taking user input for forms, games, or interactive applications.
How is casting applied in real-world scenarios?
Converting precise measurements to whole numbers for display or storage, or when interfacing with systems that require specific data types.
