No header files in Java.
Java doesn't use header files.
Java does not require header files like C/C++.
A header file in C is used to import the features of parent classes in our class. The same feature is provided by the import statement in Java hence the header files are not used.
No predefined 'header' function in the standard C libraries. There are header files, if that's what you mean.
Source code written in Java is simple. There is no preprocessor, no #define and related capabilities, no typedef, and absent those features, no longer any need for header files. Instead of header files, Java language source files provide the declarations of other classes and their methods.
Never, and the reason is that header files are not meant to be executed.
The std::pow() function can be found in the <cmath> header.
SetTimeOut is a term that is used in Java programming. It refers to the time it takes for a function in a program to time out or stop. SetTimeOut is a vital function.