Ivan's Blog


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An approach to create custom randomized, secured keyboard for Android

Recently Me and my team received a request to prepare a custom random keyboard for Android. This keyboard will be an Android library, which will be incorporate as a part of a secured application. To prepare this kind of library, we found an approach to build a custom keyboard in Android. An engineer from Netherlands published a brief article creating … Read More


A brief discussion about most common object of Java: String, StringBuffer and StringBuilder

String, StringBuffer, StringBuilder are belongs to java core library : java.lang. All these three are implements of CharSequenceInterface. When creating a String object, it creating a string that can not be changed. So when its changing a new string object is creating. This is actually called string immutable(unchanging over time or unable to be changed). String’s or object’s toString() is … Read More