// First java/javax packages
import java.util.ArrayList;
import javax.tools.JavaCompiler;

// Then third party libraries
import com.fasterxml.jackson.annotation.JsonProperty;

// Then project imports
import com.example.my.package.ClassA;
import com.example.my.package.ClassB;

// Then static imports (in the same order as above)
import static java.util.stream.Collectors.toList;

• Import statements should be sorted…
• …primarily by non-static / static with non-static imports first.
• …secondarily by package origin according to the following order

- java packages
- javax packages
- external packages (e.g. org.xml)
- internal packages (e.g. com.sun)

• …tertiary by package and class identifier in lexicographical order
• Import statements should not be line wrapped, regardless of whether it exceeds the recommended maximum length of a line.
• No unused imports should be present.

Wildcard imports

• Wildcard imports should in general not be used.
• When importing a large number of closely-related classes (such as implementing a visitor over a tree with dozens of distinct “node” classes), a wildcard import may be used.
• In any case, no more than one wildcard import per file should be used.