remove_key is an Object and packages and tariff_id are Strings.
This compiles and the key value pairs are removed however I get a "Exception in main: null" when I try to create an instance of the class where I am executing this statement. If I comment out this line I do not get the exception.
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For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench.
While learning Java can be done with…
By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Viewers will learn about the different types of variables in Java and how to declare them.
Decide the type of variable desired:
Put the keyword corresponding to the type of variable in front of the variable name:
Use the equal sign to assign a v…
Viewers will learn about basic arrays, how to declare them, and how to use them.
Introduction and definition:
Declare an array and cover the syntax of declaring them:
Initialize every index in the created array:
Example/Features of a basic arr…