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Our format is simple and engaging: students are asked a retrieval question, then shown corrective feedback and a multiple-choice mastery question to assess their understanding of the material. Assignments adapt to unique student needs and continue to draw questions until a student has demonstrated mastery.
Why is programming considered an important skill in today's world?
Why is Java widely used in the programming world?
What is the significance of Java being platform-independent?
What does it mean for Java to be an object-oriented programming language?
How does Java's large standard library contribute to its widespread use?
What is the output of the following Java code?
```java
int a = 5;
int b = 10;
int c = a + b;
System.out.println(c);
```
In Java, what is the difference between the `int` and `double` data types?
In Java, what is a `boolean` variable and what values can it hold?
Declaring and Initializing Variables in Java
Using Variables in Java
Changing the Value of a Variable in Java
Using Variables of Different Types in Java
How would you declare a variable named `total` of type `int` and assign it a value of 100 in Java?
How would you write a mathematical expression in Java to add the values of two variables, `a` and `b`, and assign the result to a third variable, `sum`?
How would you write a mathematical expression in Java to multiply the values of two variables, `num1` and `num2`, and assign the result to a third variable, `product`?
Calculate the area of a rectangle
Calculate the square of a number
Calculate the average of three numbers
Calculate the remainder of a division operation
What is the output of the following Java code?
```java
int a = 5;
a *= 2;
System.out.println(a);
```
In Java, what does the compound assignment operator `+=` do?
In Java, what does the compound assignment operator `/=` do?
Using the `+=` operator in Java
Using the `-=` operator in Java
Using the `*=` operator in Java
Using the `/=` operator in Java
What is type casting in Java and why is it used?
What is the difference between implicit and explicit type casting in Java?
What are the risks associated with type casting in Java?
Convert a String to an Integer
Convert an Integer to a String
Convert a Double to an Integer
Convert an Integer to a Double
What are the risks associated with type casting in Java?
(Student response here)
The main risk associated with type casting in Java is the potential for data loss. When a larger data type is cast to a smaller one, such as a double to an integer, any information that doesn't fit within the smaller data type is lost. This can lead to unexpected results. For example, if a `double` with a fractional part is cast to an integer, the fractional part is lost. Additionally, casting can lead to exceptions if the object being cast does not actually have the expected type.
What happens when a double value is explicitly cast to an integer in Java?