Instead of using String.format(), which is quite expensive, just manually append the nibbles. Unfortunately, the digits and letters aren't contiguous in ASCII/UTF-8, so here's how I'd handle it: static final char HEX_DIGITS[] = '0abcdef'.toCharArray().

Hex_sb.append(HEX_DIGITS[thisByte >> 4]).append(HEX_DIGITS[thisByte & 0xf]); Since this is a MAC address (known length) and gets called a whole lot, I would probably unroll the whole thing, including appending the colon/period (which should be a char, not a String). If it's really speed-critical, manage your own char[] and feed it to String#new(char[]).

You could avoid re-inserting the delimiters that way.

Oct 30, 2016 - Download JDK 8, a development environment for building applications and components using the Java programming language.www.oracle.

Set up the Android development environment Setting up Android development environment takes some time at first. It helps to make sure you don’t do anything wrong to save yourself from the agony of doing the whole process again. You're required to have or later, or Mac OS X 10.5.8 or a later version to start Android application development process. Then, there are four tools that you will need and they are available on the Internet for free: • Java JDK5 or JDK6 • • Eclipse IDE for Java Developers (optional) • Android Development Tools (ADT) Eclipse Plugin (optional) Step 1: Setup Java Development Kit (JDK) You can and install it, which is pretty easy. After that, you just have to set PATH and JAVA_HOME variables to the folder where you have java and javac.

Note for Windows Users: If you installed the JDK in C: jdk1.6.0_15 then you will have to add the following two lines in your C: autoexec.bat file. Set PATH=C: jdk1.6.0_15 bin;%PATH% set JAVA_HOME=C: jdk1.6.0_15 Step 2: Configure Android SDK After you have successfully installed the, it is time to configure it. After installing the Android SDK, you will get a window like this: Just de-select the Documentation for Android SDK and Samples for SDK packages if you want to reduce the installation size and time. Click on Install 7 packages to continue with the installation. You will get a dialogue box like this: It will take some time to install, so in the meanwhile you could do some other task to kill the time.

How long will it take? Well, it depends on the speed of your Internet connection. Once it is done, you can close the SDK manager. Step 3: Setup Eclipse IDE Install the. After successful installation, it should display a window like this: Step 4: Setup Android Development Tools (ADT) Plugin Here you will learn to install the.

To do this, you have to click on Help > Software Updates > Install New Software. This will display the following dialogue box.

Just click on the Add button as shown in the picture and add as the location. When you press OK, Eclipse will start to search for the required plug-in and finally it will list the found plug-ins. Step 5: Create Android Virtual Device The last step is to create Android Virtual Device, which you will use to test your Android applications. To do this, open and Launch Android AVD Manager from options Window > AVD Manager and click on New which will create a successful Android Virtual Device. Use the screenshot below to enter the correct values.

You have successfully created Android Application Development environment. You are now ready to create a simple Rock Paper Scissors Android App.

Before we write the code, you need to know how to take input from the user. The most efficient way of taking input from the user is to use the Scanner class, which is found in the java.io package as it is just a two-step process.

Scanner scanner = new Scanner(System.in); String input = scanner.next(); /* or String input = (new Scanner(System.in)).next(); */ I recommend using the because it works equally well on command line as well as with Eclipse that we will use to make the Rock Paper Scissors app. Calling the Java code in Eclipse We will save you the trouble of writing the java code for a simple Rock Paper Scissors app and use can use the code below, but you are free to use your own code if you prefer. // Android Rock Paper Scissors App // Rock_Paper_Scissors // ************* import java.util.Scanner; import java.util.Random; public class Rock { public static void main(String[] args) { String personPlay; //User's play -- 'R', 'P', or 'S' String computerPlay = '; //Computer's play -- 'R', 'P', or 'S' int computerInt; //Randomly generated number used to determine //computer's play String response; Scanner scan = new Scanner(System.in); Random generator = new Random(); System.out.println('Hey, let's play Rock, Paper, Scissors! Simple planes crashing osx 2017 7. N' + 'Please enter a move. N' + 'Rock = R, Paper' + '= P, and Scissors = S.'