Can you name the main entity or class from which other classes inherit in Java?

In Java (and consequently in Android), all classes implicitly inherit from java.lang.Object. This is the root class from which all other classes inherit unless explicitly specified otherwise.

For example, any user-defined class:

public class MyClass {
    // implicitly inherits from Object
}

is equivalent to:

public class MyClass extends Object {
}

Object provides basic methods such as toString(), equals(), hashCode(), clone(), and others.