( BlueJ is a free Java Development Environment designed for beginners. Si vous avez plusieurs versions de BlueJ install´ees, il est possible d’utiliser une version de BlueJ avec le JDK 1.3.1 et une autre avec le JDK 1.4. Le choix du JDK est stock´e pour chaque version BlueJ.
#Bluej tutorials how to#
BlueJ is a free Java Development Environment designed for beginners. An introduction for someone who has read through chapter 2 of the Barnes & Kolling book on how to use the unit test tools in BlueJ. Ex´ecuter vmselect pour faire d´emarrer BlueJ avec une version di´erente de Java.
If you followed the installation directions for home, it will have an icon on the desktop. Start BlueJ by finding and double clicking on its icon. Change the name of the folder from 'New Folder' to 'CSC211'. We have taken length and breadth as integer and calculated the area which is of type integer.Īs the square root is most likely to give you decimal value, we declared the variable Area_sqrt as double and calculated the square root. In this post, you will learn how to write a simple JUnit test using BlueJ IDE. First start Explorer and go to C:\ (the root directory of C drive). In this example, we are calculating the square root of the area of a rectangle. Knowing how to use these tools can make it much easier to understand and correct a programming mistake. It was designed and implemented by the BlueJ team at Deakin University, Melbourne, Australia, and the University of Kent at Canterbury, UK. BlueJ is a Java development environment specifically designed for teaching at an introductory level. Take breaks when needed, and go over the examples as many times as needed. Java is an object oriented language and some concepts may be new. We recommend reading this tutorial, in the sequence listed in the left menu. Syntax: // square root variable is declared with a double type. The BlueJ environment provides tools to help you identify errors that occur in your program. This tutorial is an introduction to using the BlueJ programming environment. Click on the 'Run example' button to see how it works.
#Bluej tutorials 64 bits#
It uses 64 bits to store a variable value and has a range greater than float type. Java double is used to represent floating-point numbers.
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