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Binary search is an optimized algorithm to perform searching operation. It follows Divide and Conquer approach for searching. Pre-condition of Binary search : To perform Binary search the array should be sorted in ascending or descending order. Logic of Binary Search Let us consider array is sorted in ascending order. Now we compare the element … Read more
In Java if we want to terminate the execution of the program then we make use of System.exit(n) method. Let us see important points : System.exit(n) method takes a non zero argument to indicate abnormal termination. System.exit(n) will exit the program irrespective of the operation being performed. If we call System.exit(n) within a try catch … Read more
Escape sequence is a character which is preceded by the backslash (\). Compiler has special meaning for escape sequences. Use of Escape Sequences Sometimes we may need to print some text within double quotes or we may need insert a new line in between texts. So these escape sequences were introduced to perform these special … Read more
In multiple inheritance a single class extends from more than one class. But Java does not support multiple inheritance among classes. Multiple inheritance in Java is possible with Interface. Let us understand with help of diagram about multiple inheritance : Class A is inheriting from class B and class C at the same time. Why … Read more
In Hierarchical inheritance a class is inherited by more than one classes. Let us take a look at the diagram: In the above diagram we can see that class B and class C is inheriting from the same class A which is called Hierarchical Inheritance in Java. Let us look at an example to understand … Read more
In multilevel inheritance a parent class is extended by child class and this child class is again extended by another class. Let us understand with help of a diagram: Above diagram shows an example of multilevel inheritance. Class B extends class A and class C extends class B. Let us look at the java code … Read more
This is most basic type of inheritance. In single level inheritance the child class is derived from its parent class only. We can see from above image that class B is being derived from class A. This scenario is called single level inheritance. Let us understand with help of Java code: Output In above code … Read more
Constructor chaining is the way through which a constructor make a call to another constructor. Constructor chaining can be done in 2 ways: Output In the above code we called Example2() constructor for object creation which in turn calls Example2(int age) constructor using this(29). Now inside Example2(int age) constructor a call is made to Example2(int … Read more
Constructor overloading is the way through which multiple constructors can be defined within the class by changing the arguments of the signature. Let us understand this with an example: Output In the above code we have overloaded the constructor by changing the number of parameters in signature. We can use any constructor for creation of … Read more