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KeyUsage does not allow digital signatures

I’m trying to send HTTPS request from my Java EE program to the host that requires certificate authentication. I have a proper keystore file, truststore with imported CA, the listing of both shows that certificates are inside. But I receive the following error: Viewing the certificate contents in the part of Extensions I see the following: So my certificate does

Are recursive methods always better than iterative methods in Java? [closed]

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 9 years ago.

How to convert list data into json in java

I have a function which is returning Data as List in java class. Now as per my need, I have to convert it into Json Format. Below is my function code snippet: I tried To convert into json by using this code but it is giving type mismatch error as function is of type List… Please help me resolve this.

Josephus sequence

Description: There are people standing in a circle waiting to be executed. The counting out begins at some point in the circle and proceeds around the circle in a fixed direction. In each step, a …

Why does this Java method appear to have two return types?

where Foo is my own class. What is the return type of this method? Why does it seem to have two return types? Answer No, you don’t have two return types. It’s a generic method you are seeing. <E extends Foo> → You are declaring a generic type for your method; List<E> → This is your return type. Your method

Exception in thread “main” java.awt.AWTError: Assistive Technology not found

How to solve this error? Exception in thread “main” java.awt.AWTError: Assistive Technology not found: at java.awt.Toolkit.loadAssistiveTechnologies( at java.awt.Toolkit.getDefaultToolkit( at java.awt.Window.getToolkit( at java.awt.Window.init( at java.awt.Window.( at java.awt.Frame.( at java.awt.Frame.( at javax.swing.JFrame.( at FirstJavaProject.( at FirstJavaProject.main( It occurs during the execution of following program: My JDK_HOME/jre/lib/ file has the following content: Answer For future reference, one of the more common causes