Android Development Tutorial (Based on Android 4.1) class-2

Other Android components

Android has several more components which can be used in your Android application.

Intents

Intents are asynchronous messages which allow the application to request functionality from other components of the Android system, e.g. from Services or Activities. An application can call a component directly (explicit Intent) or ask the Android system to evaluate registered components based on the Intent data (implicit Intents ). For example the application could implement sharing of data via an

SCJP Sun Certified Programmer for Java 6 Study Guide Exam(310-065)

In This Tutorial

This Tutorial is organized to optimize your learning of the topics covered by the SCJP Java 6 exam. Whenever possible, we've organized the chapters to parallel the Sun objectives, but sometimes we'll mix up objectives or partially repeat them in order to present topics in an order better suited to learning

Android Development Tutorial (Based on Android 4.1) class-1

1. What is Android?

Android Operation System:

Android is an operating system based on Linux with a Java programming interface.

The Android Software Development Kit (Android SDK) provides all necessary tools to develop Android applications. This includes a compiler, debugger and a device emulator, as well as its own virtual

Floating point representation

The floating point representation of a number has two parts. The first part represents a signed, fixed point number called the mantissa. The second point designates the position of the decimal point and is called as the exponent. The fixed mantissa may be a

E-R diagram for a university

A university registrar’s office maintains data about the following entities:

(a) courses, including number, title, credits, syllabus, and prerequisites;

(b) course offerings, including course number, year, semester, section number, instructor(s), timings, and

Binary Multiplication & Binary Division

Binary Multiplication

Binary multiplication is performed in same way as decimal numbers. A simplistic way to perform multiplication is by repeated addition. The multiplication rules for binary digits is as follows

Explain the distinctions among the terms primary key, candidate key, and superkey.

Answer: A superkey is a set of one or more attributes that, taken collectively, allows us to identify uniquely an entity in the entity set. A superkey may contain extraneous attributes. If K is a superkey, then so is any superset of K. A superkey for which no proper subset is also a superkey is called a candidate