Object
Category:java.lang
The Object class in Java is the root of the class hierarchy. All classes inherit from the Object class, so it is automatically the superclass of all classes.
Method Details
equals
public boolean equals(Object obj)
The equals() method in the Object class compares the calling object to another object. The method returns true if the two objects are equal and false otherwise.
Note: This method is often overridden.
Parameters
| Name | Type | Description |
|---|---|---|
| obj | Object | the object to compare to the calling object |
Examples
Dog firstDog = new Dog("Fido");
Dog secondDog = new Dog("Max");
System.out.println(firstDog.equals(secondDog));
Output:
false
toString
public String toString()
The toString() method returns a String representation of an object.
Note: This method is often overridden.
Examples
Object obj1 = new Object();
System.out.println(obj1.toString());
Output:
java.lang.Object@7a81197d
This is a textual representation of the object. It includes the class, @, and the hash code of the object.
