Methods in java
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This document discusses methods in Java. It defines a method as a collection of instructions that performs a specific task and provides code reusability. There are two types of methods in Java: predefined methods and user-defined methods. Predefined methods are methods already defined in Java class libraries that can be directly called, while user-defined methods are written by programmers according to their needs. Examples of both types of methods are provided.
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public class Demo
{
public static void main(String[] args)
{
// using the max() method of Math class
System.out.print("The maximum number is: " + Math.
max(9,7));
}
}](https://image.slidesharecdn.com/methodsinjava-200922055626/85/Methods-in-java-7-320.jpg)
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Chapter 5 Learning Outcomes .................................................................................................................... 3
User Created Methods in Java ......................................................................................... 4
Method Modifiers ............................................................................................................................... 4
Return Type ........................................................................................................................................ 6
Other method modifiers ..................................................................................................................... 7
Method Parameters ............................................................................................................................ 7
Invoking a Method and Parameter Passing ......................................................................................... 7
Method Documentation ..................................................................................................................... 9
CheckPoint 5.1 .................................................................................................................................. 10
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Jsp
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Exception handling in java
Exception handling in javachauhankapil This document discusses exception handling in Java. It defines exception handling as a mechanism to handle runtime errors. It describes the two main types of exceptions in Java - checked exceptions which are checked at compile-time, and unchecked exceptions which are checked at runtime. Finally, it provides an example of exception handling in Java using the try, catch, and finally keywords.
Knowledge acquistion
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Knowledge based system
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Introduction of predicate logics
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Types of inheritance in java
Types of inheritance in javachauhankapil There are three types of inheritance in Java: single, multilevel, and hierarchical. Single inheritance allows a child class to inherit from one parent class, as in the example of the Dog class extending the Animal class. Multilevel inheritance allows a grandchild class to inherit from a parent class through a child class, as in the BabyDog class extending Dog and indirectly inheriting from Animal. Hierarchical inheritance allows multiple child classes to inherit from a common parent class, as in both the Dog and Cat classes extending Animal.
Representation of syntax, semantics and Predicate logics
Representation of syntax, semantics and Predicate logicschauhankapil This document discusses different methods for representing syntax, semantics, and predicate logic in natural language processing. It introduces propositional and formal semantics which represent text as logical formulas, as well as vector representations which embed text in multi-dimensional space. Various logical representations are examined including propositional logic, predicate logic, production rules, semantic networks, and description logics.
Inheritance in java
Inheritance in javachauhankapil This document discusses inheritance in Java. It defines key terms like subclass, superclass, and reusability. It explains that a subclass inherits the properties and behaviors of its parent superclass. The syntax for inheritance in Java uses the "extends" keyword. The document provides two code examples to demonstrate inheritance - a Programmer subclass that inherits from an Employee superclass, and a My_Calculation subclass that inherits and extends the Calculation superclass with a new method.
Propositional logic
Propositional logicchauhankapil Propositional logic is the simplest form of logic that uses propositions that are either true or false. A proposition is a declarative statement. Propositional logic represents knowledge using symbolic variables and logical connectors. There are two types of propositions: atomic propositions which are single statements, and compound propositions which combine simpler propositions using logical connectors like AND and OR. Propositional logic is also known as Boolean logic as it uses 1s and 0s to represent true and false values.
Constructors in java
Constructors in javachauhankapil Constructors in Java are special methods that are used to initialize objects. There are two types of constructors: default (no-arg) constructors that take no parameters, and parameterized constructors that allow passing parameters to initialize an object. Constructors must have the same name as the class and cannot have a return type. They are automatically called when an object is created using the new keyword to allocate memory and initialize fields.
Circular linked list
Circular linked listchauhankapil This document provides an introduction to circular linked lists. It explains that a circular linked list is a variation of a linked list where the first element points to the last element, forming a loop. Both singly and doubly linked lists can be made circular by having the next pointer of the last node point to the first node, and in doubly linked lists the previous pointer of the first node points to the last node. Basic operations like insert, delete, and display are supported. Memory management involves the head pointer storing the address of the first node, and each node storing the address of the next node and last node.
Doubly linked list
Doubly linked listchauhankapil This document introduces doubly linked lists. A doubly linked list allows navigation in both directions by including a prev pointer in each node in addition to the next pointer found in singly linked lists. Each node contains data, a next pointer, and a prev pointer. The list also contains pointers to the first and last nodes. Basic operations on doubly linked lists include insertion and deletion at the beginning or end of the list as well as insertion or deletion after a specified node.
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- 2. Introduction the method in Java is a collection of instructions that performs a specific task. It provides the reusability of code. We can also easily modify code using methods. A method is a block of code or collection of statements or a set of code grouped together to perform a certain task or operation.
- 3. Cont.. It is used to achieve the reusability of code. We write a method once and use it many times. We do not require to write code again and again.
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- 7. Example public class Demo { public static void main(String[] args) { // using the max() method of Math class System.out.print("The maximum number is: " + Math. max(9,7)); } }
- 8. User-defined Method The method written by the user or programmer is known as a user-defined method. These methods are modified according to the requirement.
- 9. Example public static void findEvenOdd(int num) { //method body if(num%2==0) System.out.println(num+" is even"); else System.out.println(num+" is odd"); }
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