Is Java Util a default package?

No, java. lang package is a default package in Java therefore, there is no need to import it explicitly. i.e. without importing you can access the classes of this package.

For convenience, the Java compiler automatically imports two entire packages for each source file: (1) the java. lang package and (2) the current package (the package for the current file).

You can import a default package to a default package class only . If you do so for another package, then it shall be a compilation error. This is incorrect. There is no syntax that will allow you to name a class in the default package in an import statement.7 Kas 2011