Java is a simple, secured, high level, platform-independent, multithread, Object-oriented programming language.
It’s one of the most popular and widely used programming language, platform, and technology. Java is not only a language it is also a platform and technology.
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Clone() Method Quiz | Cloning of objects means creating an exact duplicate copy with the current object state. In Java, to perform cloning clone() method is given in java.lang.Object class. Also see:- Object Class Quiz Set-1, Java Hashcode Value Quiz, Java Equals() Method Quiz Q1) What is the return type of clone() method in the Object class? a) […]
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Java Object Class MCQ | Also see:- Java Hashcode Value Quiz, Java Equals() Method Quiz, Java toString() Method Quiz, Clone() Method Quiz Q1) Which of these classes is the superclass of every class in Java? a) Integerb) Mathc) Objectd) Exception View Answer Answer:- c) Object Either directly or indirectly, every class in Java is the child
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Java.lang.Object.equals() Method Quiz | Prerequisite:- Equals Method in Java | Another Quiz on Object class:- Object Class Quiz Set-1, Object Class Quiz Set-2, Java Hashcode Value Quiz, Java Equals() Method Quiz Q1) Find the output of the below Java program? a) trueb) falsec) nulld) error View Answer Answer:- b) false Q2) Find the output of the
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Math.round() Method in Java | The java.lang.Math.round() method returns the closest value to the argument, with ties rounding to positive infinity. There are two overloaded forms of the round() method in java.lang.Math class, public static int round(float a) public static long round(double a) Java Math.round() Examples Java program to demonstrate Math.round() method Output:- 566 Other
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What is object class in Java? In Java, the Object class is the root or superclass of all classes. Directly or indirectly every predefined and user-defined Java class is a subclass of the Object class. Object class contains the most commonly required methods for every Java class. The most commonly required methods for every Java
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Clone() Method in Java Object class | Cloning of objects means creating an exact duplicate copy with the current object state. In Java, to perform a cloning clone() method is given in java.lang.Object class. The prototype of java.lang.Object.clone() method is:- protected native Object clone() throws CloneNotSupportException Condition:- To execute clone() method on an object the
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HashCode() and equals() method in Java | Previously we discussed hashCode() method and equals() method of java.lang.Object class in detail. Now let us see the relation between hashCode() and the equals() method in Java. What are the differences between the hashCode() and equals() methods in Java? What is the contract between the hashcode and the
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Object Class toString() Method in Java | The java.lang.Object.toString() method is used to retrieve object information in string form. The prototype of the toString() method in the Object class in Java is:- public String toString() Every class is having its own class name, hashcode, and state. In java.lang.Object class toString() method is implemented for returning
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Object getClass() Method in Java | We can use getClass() method of java.lang.Object class to get the runtime class definition of a runtime class object. Prototype of getClass() method of java.lang.Object class is:- public final native Class<?> getClass() Return value:- The Class object that represents the runtime class of this object. Let us first understand
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