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Java Articles
Page 115 of 450
Prime number program in Java.
Following is the required program.Examplepublic class Tester { public static void main(String args[]) { int i, m = 0, flag = 0; int n = 41;// it is the number to be checked m = n / 2; if (n == 0 || n == 1) { System.out.println(n + " not a prime number"); } else { for (i = 2; i
Read MorePrime number program in Java.
Following is the required program.Examplepublic class Tester { public static void main(String args[]) { int i, m = 0, flag = 0; int n = 41;// it is the number to be checked m = n / 2; if (n == 0 || n == 1) { System.out.println(n + " not a prime number"); } else { for (i = 2; i
Read MoreFactorial program in Java without using recursion.
Following is the required program.Examplepublic class Tester { static int factorial(int n) { if (n == 0) return 1; else return (n * factorial(n - 1)); } public static void main(String args[]) { int i, fact = 1; int number = 5; fact = factorial(number); System.out.println(number + "! = " + fact); } }Output5! = 120
Read MoreFactorial program in Java without using recursion.
Following is the required program.Examplepublic class Tester { static int factorial(int n) { if (n == 0) return 1; else return (n * factorial(n - 1)); } public static void main(String args[]) { int i, fact = 1; int number = 5; fact = factorial(number); System.out.println(number + "! = " + fact); } }Output5! = 120
Read MoreSingle level inheritance in Java
Single Level inheritance - A class inherits properties from a single class. For example, Class B inherits Class A.Exampleclass Shape { public void display() { System.out.println("Inside display"); } } class Rectangle extends Shape { public void area() { System.out.println("Inside area"); } } public class Tester { public static void main(String[] arguments) { Rectangle rect = new Rectangle(); rect.display(); rect.area(); } }OutputInside display Inside areaHere Rectangle class inherits Shape class and can execute two methods, display() and area() as shown.
Read MoreSingle level inheritance in Java
Single Level inheritance - A class inherits properties from a single class. For example, Class B inherits Class A.Exampleclass Shape { public void display() { System.out.println("Inside display"); } } class Rectangle extends Shape { public void area() { System.out.println("Inside area"); } } public class Tester { public static void main(String[] arguments) { Rectangle rect = new Rectangle(); rect.display(); rect.area(); } }OutputInside display Inside areaHere Rectangle class inherits Shape class and can execute two methods, display() and area() as shown.
Read MoreSingle level inheritance in Java
Single Level inheritance - A class inherits properties from a single class. For example, Class B inherits Class A.Exampleclass Shape { public void display() { System.out.println("Inside display"); } } class Rectangle extends Shape { public void area() { System.out.println("Inside area"); } } public class Tester { public static void main(String[] arguments) { Rectangle rect = new Rectangle(); rect.display(); rect.area(); } }OutputInside display Inside areaHere Rectangle class inherits Shape class and can execute two methods, display() and area() as shown.
Read MoreRuntime Polymorphism in Java
Method overriding is an example of runtime polymorphism. In method overriding, a subclass overrides a method with the same signature as that of in its superclass. During compile time, the check is made on the reference type. However, in the runtime, JVM figures out the object type and would run the method that belongs to that particular object.ExampleSee the example below to understand the concept −class Animal { public void move() { System.out.println("Animals can move"); } } class Dog extends Animal { public void move() { System.out.println("Dogs can walk and run"); ...
Read MoreRuntime Polymorphism in Java
Method overriding is an example of runtime polymorphism. In method overriding, a subclass overrides a method with the same signature as that of in its superclass. During compile time, the check is made on the reference type. However, in the runtime, JVM figures out the object type and would run the method that belongs to that particular object.ExampleSee the example below to understand the concept −class Animal { public void move() { System.out.println("Animals can move"); } } class Dog extends Animal { public void move() { System.out.println("Dogs can walk and run"); ...
Read MoreRuntime Polymorphism in Java
Method overriding is an example of runtime polymorphism. In method overriding, a subclass overrides a method with the same signature as that of in its superclass. During compile time, the check is made on the reference type. However, in the runtime, JVM figures out the object type and would run the method that belongs to that particular object.ExampleSee the example below to understand the concept −class Animal { public void move() { System.out.println("Animals can move"); } } class Dog extends Animal { public void move() { System.out.println("Dogs can walk and run"); ...
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