Java does not require header files like C/C++.
Java doesn't use header files.
The supermost package of Java is the "java" package.
a package
That means, the header of a function. The header is the top part, before the opening braces.
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.
The Java 'this' installation package allows one to create installation programs for their Java based applications. One can download the program from Java.
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.
The java.lang package is automatically imported for you.
A default package is a package with no name. You can create a Java class without putting package name on top of the code. This class is included in the "default package". Be careful not to be confused with java.lang, which is a package that contains Java's fundamental classes and get's imported by default.
The java.lang package in Java is automatically imported for you.