Android / Java

create an Android service

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Today I m going to let you know how to create an Android service through Android app. Lets assume you are developing Android app and you need to start and install a […]

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Oracle

How to find Constraints on Oracle database

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You need to find constraints of oracle database. Use below query for that. SELECT * FROM user_cons_columns WHERE table_name = ”; Further if you want to find more details on constraints then […]

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Uncategorized

OUTER APPLY in MS SQL

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Today I m going to explain outer apply condition in MS SQL to you. According to my database programming experience I can confirm that outer apply is faster than a sub queries. […]

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Android / Java

Consume REST Web Service via Android

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Lets say you have created an activity called LoginActivity.java You need to import Async task to run a web service call. import android.os.AsyncTask; And inside the controller class you need to create […]

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Java

Java Upcasting

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When reference variable of a parent class refers to an object of child class then we call it upcasting. Example is below. Class Bank(){ } Class ComBank extends Bank(){ } Class BankModule(){ […]

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Angular 4 / typescript

Change label text according to radio button selected – Type script , Angular2

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You might need to change a label text according to the radio button selection in same form. And further you may no need to call functions or server end to change that […]

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Java

Java Static Blocks, Variables and Methods

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Static Member :- What is a static member ? Static member is a member of a class that which is not interact or associate of  an instance of a class. This can […]

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Apache Keycloak

Keycloak

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What is keycloak ? This is an authentication service provided by Apache and  developers no need to worry about high secure user authentication if they are going to use keycloak. They can […]

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Angular 4

ngIf

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This is simply if else condition which will update html DOM elements as you need. But more clarification this is not completely differ from ngShow or ngHide. Because this is not updating […]

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Java

Access Modifiers in Java

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There are two levels of access modifiers such as top level access and member level access. Top level access This is related to class definition. A class can be public or package-private.

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Java

Abstract Class and Abstract methods in Java 01

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Abstract class is also a class which is declared as abstract and this cannot be instantiated like normal java class even though it can be sub classed.

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Java

Default method in interface in java – part 1

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This default method comes to scene when developers need to update existing interface without updating that interface implement classes updating. Default methods must have to have an implementation.  And developer can update […]

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Java

Interfaces in Java – Part 2

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When you define an interface if you make interface public then any class can access it and if you did not use word of public then it will only accessible to classes […]

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