Java (Programming)

Topik

v Object class

v Math class

v Wrapper class

v String

v StringBuffer

java.lang

Java compiler automatically imports all the classes in the

java.lang package into every source file.

v some of the most important classes of the java.lang package:

v Object

v Math

v The wrapper classes

v String

v StringBuffer

The Object Class

Class Object adalah akar dari semua class yang ada

di Java.

Deklarasi class tanpa extends, secara implisit pasti

ditambahkan “extends Object”.

public class Employee{ }

sama dengan:

public class Employee extends Object{ }

The methods:

wait()

notify()

notifyAll()

equals()

toString()