Java: Explicit type conversion
Java is a strongly typed programming language. Using special syntax we can change type of variables:
System.out.print(Integer.parseInt("345"));
Type conversion works like this: before the value, the desired type is indicated in parentheses. As a result, the value on the right is converted to a value of another type indicated on the left in parentheses. At the moment we are familiar with only two types, but the transformation in Java works not only for the primitive types.
Type conversion can be used inside compound expressions:
//Additional brackets help to visually separate parts of the expression from each other
System.out.print("It's" + ((int) 5.1));
It's 5
In case above, in spite of the fact, that 5.1 is the number, it has double type not int. Expression above bring this number type to int type, reject fraction part, because int type doesn't keep fraction part.
https://replit.com/@hexlet/java-basics-data-types
Instructions
Display the string 2 times, obtained from the number 2.9 and the string times, using type conversions and concatenation.
The exercise doesn't pass checking. What to do? 😶
If you've reached a deadlock it's time to ask your question in the «Discussions». How ask a question correctly:
- Be sure to attach the test output, without it it's almost impossible to figure out what went wrong, even if you show your code. It's complicated for developers to execute code in their heads, but having a mistake before their eyes most probably will be helpful.
In my environment the code works, but not here 🤨
Tests are designed so that they test the solution in different ways and against different data. Often the solution works with one kind of input data but doesn't work with others. Check the «Tests» tab to figure this out, you can find hints at the error output.
My code is different from the teacher's one 🤔
It's fine. 🙆 One task in programming can be solved in many different ways. If your code passed all tests, it complies with the task conditions.
In some rare cases, the solution may be adjusted to the tests, but this can be seen immediately.
I've read the lessons but nothing is clear 🙄
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