AP Computer Science A : Object-Oriented Development
Study concepts, example questions & explanations for AP Computer Science A
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Example Questions
Example Question #1 : Object Oriented Development
JAVA EXPLICIT TYPE CASTING
Consider the following JAVA code:
public static void main(String[] args)
{
double number1 = 99.05;
int number2 = (int) number1;
System.out.println("number1 = " + number1);
System.out.println("number2 = " + number2);
}
What would be the console output?
number1 = 99.05
number2 = 99
number1 = 99
number2 = 99
number1 = 99.05
number2 = 99.05
number1 = 99.05
number2 = 99.00
number1 = 99.05
number2 = 99
Type casting deals with assigning the value of a variable to another variable that is of a different type. In this case we have two variables one that is a double, and another that is an integer. number1 is a double that has a value of 99.05. However, when number2 is assigned the value of number1, there is some explicit type casting going on. When an integer is assigned the value of a double, it drops off the decimal places. This means that number2 has a value of 99.
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