I copied a project from one folder to another in the file System. Then I opened it through eclipse and tried to run the programs. I got the following error message when the program starts by creating an object:
java.lang.SecurityException: class "javax.mail.Message"'s signer information does not match signer information of other classes in the same package.
I have a mail.jar on the project's buildpath and at the end of the program an email will be sent. But the exception is thrown at a line that is still far from sending emails.
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Java had always been an easily readable and understandable language. Some relatively recent changes in the language seem to be changing this pretty fast, and anyone that had not seen any Java code for the last 5 years will possibly have issues unde…
Are you developing a Java application and want to create Excel Spreadsheets? You have come to the right place, this article will describe how you can create Excel Spreadsheets from a Java Application.
For the purposes of this article, I will be u…
Viewers will learn one way to get user input in Java.
Introduce the Scanner object:
Declare the variable that stores the user input:
An example prompting the user for input:
Methods you need to invoke in order to properly get user input: