I tried to decrypt en encrypted string in JAVA with to code below. How can I get the same result with PHP version? I tried to write in PHP and It outputs with wrong result. Answer The build3DesKey() function expands a too short 3DES key to 24 bytes by padding the end with 0x00 values, for too long keys the
Tag: java
“Find Missing & Repeating Number” unable to compile on hackerrank suppose to use array list only not simple array [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 4 months ago. Improve this question Encountered this program on hackerrank it was showing runtime error. The relevant code bloc…
Why does the call to a parent class constructor not call the parent’s methods that are overriden in the child class?
As shown in the code below, given a superclass Parent with a method calculate() that is called in Parent’s constructor, but also overriden in the class Child, why does the implicit call to Parent’s constructor within Child’s constructor not call Parent’s calculate() instead of Child…
Can’t create one_to_one relationship: Unknown mappedBy in
I try to create an OneToOne relationship between two tables but I receive errors. I used a lot of tutorials but nothing helps. For example baeldung tutorial: Project structure: The error: Gradle: application.properties: Answer You need to use a field name for mappedby, not a column name. In you case, it shoul…
Java – Stream API: applying reduce() operation to find the Minimum value that meets the requirements
Small question regarding Java and its Stream API, especially the reduce() operation. I have as input some Stream of integers. The integers go from -1 inclusive, to a positive integer. In the mathematical notation, it would be [-1,n]. Note that the smallest possible number is -1 (minus 1). It cannot be -2, -3,…
Fill the Third Array by adding the elements of the First and Second Arrays
I want to generate an array which content would represent a Cartesian product of the two given string-arrays. In other words, I need to concatenate each String from the first array arr1 with every String from the second array arr2. Here is my code: Current Output: Desired Output: How can I fix it? Answer You …
Generic type get method doesn’t work in a foreach loop – java: incompatible types: java.lang.Object cannot be converted to Error
I am studying Generics in Java in Oracle docs. In Type Inference & Generic Methods section there is this code and it is not working in Intellij Idea. This is Box class This is BoxDemo class. Here is Screen Answer Try to change your for and iterate from boxes the type Box box instead of Box box
Get jar manifest attributes from Java agent
I am running my own java agent on a jar containing some sample code. Input to the command line: I’m currently providing the sample-code.jar’s main class (as stated in its manifest) as an arg to the agent, although, I’m trying to find a way to access the sample-code.jar’s manifest’…
What happens when we define bean with different names with Annotations and XML config?
The coach object is created with Annotations and coach2 is created with XML configuration file. They both refering to the tennisCoach class. In singleton scope beans refer to the same place in memory but in this situation memory place is different. I have two questions. Why Spring lets us create two objects? …
Why It is giving me Integer Overflow
Its giving me Integer Overflow both in java and C but when I tried it in Python it gave me right answer . Any reasons ? Answer There are two reasons: Most computer languages use fixed-size integers. Today, that’s often 32 bits. The correct result of your calculation, 2500000025, is a 32-bit number, mean…