Do anybody have a function with which I can transpose a Matrix in Java which has the following form: I have function like this: but its wrong somewhere. Answer
Get index of enum from string?
I have a string value, I also have an array of strings and an enum containing the range also. To get the index of the string in the array, from the value supplied I write this: How do I do this for an enum? Can I use ordinal? Or do i have to make my own method? The method might
How to create change listener for variable?
Let’s say I have some variable defined using the statementint someVariable;. While the code runs, the variable’s value changes. How can I track the changes in this variable? How could I implement some Listener that behaves like onSomeVariableChangedListener? I also need to know when some other met…
How parse 2013-03-13T20:59:31+0000 date string to Date
How to parse this format date string 2013-03-13T20:59:31+0000 to Date object? I’m trying on this way but it doesn’t work. I get this exception from the first line: java.lang.IllegalArgumentException: Illegal pattern character ‘T’ Answer DateFormat df = new SimpleDateFormat(“yyyy-…
Casting LinkedHashMap to Complex Object
I’ve got an application that stores some data in DynamoDB using Jackson to marshall my complex object into a JSON. For example the object I’m marshalling might look like this: Where SomeObject might look like this: and SomeOtherObject might look like this: This is fine an the object gets marshalle…
Import project (jar) into Eclipse
I got a .jar file which I need to import into Eclipse. However, I don’t want to have the jar as a referenced library. I need the .jar to be included like a “normal” project, with packages(!) and .java files. I tried to do the following: New Java project -> Import -> General -> Archi…
Error with win32com.dll in Eclipse
I am getting an error in eclipse with regards to my win32com.dll file. From the error it would appear I am trying to use a 32-bit .dll instead of a 64-bit, but unfortunately I haven’t been able to find a 64-bit win32com.dll file anywhere and I’m at a loss at how to proceed. I literally downloaded …
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 pa…
Are recursive methods always better than iterative methods in Java? [closed]
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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.