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In Java, we can cast a variable from one type to another.

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So far, you learn to create variables that store five types of values int.

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Long double.

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Car and street.

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In this lesson, we're going to use typecasting to convert a value from one type to another.

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The first thing I'll need you to do is create a new class by yourself, so inside the section to project

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create a new file name type conversion Java and make sure the type conversion class has a main method.

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OK, the first thing we'll address is how we can cast a value from double to.

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In other words, you can convert a double value to an integer.

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Imagine we have a double variable called decimal and it stores the value four point three.

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We also have an invariable integer, and right now it equals nothing, so we want to copy the first

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value into integer, but remember that into variables cannot store decimals.

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They can only store whole numbers.

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So before you can store this value into an integer variable, you need to cast a double value to it.

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And we can do that by specifying two things, telling Java the type that we're casting to.

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In this case, we want to cast some value to end and then specify the value that you want to copy in

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this case, it's the decimal.

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So what job is going to do is convert the double Valetta into by cutting off the decimal, resulting

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in a whole number, and now the invalid integer stores the previous value as a whole?

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No.

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I thought of a fun example where your friend Percy, let's call him, needs help calculating his salary.

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So what we're going to do is make a double variable, double salary.

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And let's assume you calculated the salary to be five thousand eight hundred and thirty three dollars

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point thirty three cents.

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And for the sake of it, let's add a bunch of more threes because we will assume the calculator spat

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out that number.

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OK, we need to print this family so that person can see it, system dot, dot, print nine.

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And will say Pearse's.

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Salary is.

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In dollars.

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Whatever the salary value is.

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Go ahead and compile a code.

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All right, now, looking at this message, accuracy is a really important in the thousands of dollars,

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do we really care about cents, much less the other decimal points?

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In this case, it would make more sense to express the salary as a whole number and not care about what

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the calculator gave us.

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So let's make another variable of type it into a rounded salary.

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And we're going to cast the first Valetta at.

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Int salary.

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And what that's going to return is a whole no version of the salary value.

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All right, recompiling our code.

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And printing it and this looks a lot cleaner.

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In the real world, data comes in many forms, and your job is to present this data to the user in a

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clean and practical way.

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In this case, the salary value came in as a double.

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It had many useless decimal points.

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So you cast the double value as an integer.

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And printing this family looks much better.

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In this lesson, you learn to cast values from one type to another, the salary value came in as a double.

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It had many useless decimal point.

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So you cast the double value at printing this value.

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Look more presentable and converting between types is very common.

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So for now, I encourage you to test your knowledge by doing the quiz and trying out the next workbook.