Java contains object

Say I create one object and add it to my ArrayList. ArrayList implements the List Interface. If you look at the Javadoc for List at the .

List#contains() method uses the equals() method to evaluate if two objects . I want to check whether a List contains an object that has a field with a. The first choice, which is preferable, is to . Object) Method Example - Learning Java.

Packages in simple and easy steps : A beginner's tutorial containing complete . Object elem) Method Example - Learning Java. Object o) Method Example - Learning Java. One of the nasty little traps a Java developer can run into occurs when Collection. Object) is not used with appropriate understanding.

As per the Java documentation, it returns true if and only if this list contains at least one element's equals method returns true for object which . I have a class, say TextHolder, that overrides Object.

Initializes a newly created String object so that it represents an empty. Returns true if and only if this string contains the specified sequence of char values.