¿Qué significa Ljava?

What does Ljava mean?

The class name of a String array is [Ljava.lang.String; . [ means it’s an array, L means it can contain references to objects, and java.lang.String means all those objects should be instances of java.lang.String .

Class java. lang. Object

Everything in Java is associated with classes and objects, along with its attributes and methods. For example: in real life, a car is an object. The car has attributes, such as weight and color, and methods, such as drive and brake. A Class is like an object constructor, or a “blueprint” for creating objects.

It can also be used to get metadata of this class. The returned Class object is the object that is locked by static synchronized methods of the represented class. As it is final so we don’t override it.

[ stands for single dimension array. Ljava.lang.String stands for the string class (L followed by class/interface name) Few Examples: Class.

A toString() is an in-built method in Java that returns the value given to it in string format. Hence, any object that this method is applied on, will then be returned as a string object.

Methods of Object class

Class is a blueprint or template from which objects are created. Object is a real world entity such as pen, laptop, mobile, bed, keyboard, mouse, chair etc. Class is a group of similar objects. Object is a physical entity.

java.lang.AbstractMethodError. Thrown when an application tries to call an abstract method. Normally, this error is caught by the compiler; this error can only occur at run time if the definition of some class has incompatibly changed since the currently executing method was last compiled.

App script has underlying data structure built up on java…Ljava.lang….. represents object notation in Java to indicate any object such as Array,JSON in GAS.To get actual value try toString () (or) JSON.Stringify () and check whether you have a value. Be careful of when you do value setting.

lang.Object provides a number of methods that are common to all objects . The toString() is the most common such method . Since the default toString() method only produces the name of the class . java.lang.Object Class methods helps to perform the various operations like clone objects , compare objects , get the class name of the object .

[Ljava.lang.Object; is the name for Object [].class, the java.lang.Class representing the class of array of Object. The naming scheme is documented in Class.getName ():

The java.lang package has Object class. Object class is the root of the class hierarchy. Every class has Object as a super class. The Object class, in the java.lang package, sits at the top of the class hierarchy tree. Every class is a descendant, direct or indirect, of the Object class.