I am trying to save each index of list as new line in text file in format below in java and read same as two separate Array List for later . I have done the saving part now i want to read it back into two separate lists Save Formate Class SaveLists Class Main : Answer As both the save
Tag: java
How to copy object that has a list with BeanUtils?
I’m working on a multi maven modules and I want to copy from entity to model with BeanUtils, here what I tried: This is my entity (with getters/setter/noargs/allargs): and this is my model (DTO Model): This is the output I’m getting: The problem is that the fields get copied but the list does not …
How can I use more then one param in a spring boot rest Controller?
I want to achive the follwing URL to access my data with 2 params: http://localhost:8080/contactnote?entryDate=2022-02-01?contactType=T Both mappings with a single param is working: But when I try to combine them with two params it wont work, not one of them is usable. My reposiitory looks like this: Answer t…
how to decrypt using DatatypeConverter MD5 In JAVA?
Answer You can’t. That’s what hashing is about. This is not a API or library limitation but a mathematical one, which is there by design. You need to understand that hashing and encryption/ decryption are two completely different things (which are often used together). Hashing A hash, or to be pre…
How to print times (hh:mm) in a quarter-hour cycle?
I need to basically print every quarter-hour of the day from 00:00 to 23:45 (so 96 different times) in hh:mm format to create a html report. Is there a standard library to do that? Or another way? Answer Can be done using the java.time.LocalTime: It can also be done with a for loop, just consider that LocalTi…
How to output direction of shortest path?
This is a simple maze solver program. this is the simple maze i’m working on. I implemented a solution to output cordinates of the path as follow.(cordinates aquired from a BFS algorithm) but I want to output like below(omit same direction and only output direction and last coordinate to same direction)…
Handle inbound AMQP messages based on a header attribute (e.g. routing key)
I have a service, that receives AMQP messages. This service is bound to a queue, which receives all messages which match a set of routing keys. My set up is as follows: This already works fine. However, now I want to handle a message with different controllers, depending on a header attribute. In this case I&…
How do I multiply the values in two array list, then add it to the second arraylist?
I am trying to calculate the total cost of items in the users cart. My approach to this is to store the item cost as well as the quantity in an Arraylist, and then multiply the value then add it. For example this is my Arraylist. I would like to do 2.00* 5.00 + 3.00 * 6.00 + 4.00 *
Customer Selenium webdriver java method for validating table search results
I am wanting to create a custom method in a Base page object that will allow me to validate the results returned in a dynamic table after searching. I have the below method .. It takes as arguments the WebElement table, a column name that I want to validate against and and expected value that I expect to be r…
How to use iterator pattern in java to load file into hashmap in batches
I have a large file containing two million lines . I’m looking to traverse through each line of the file and, process it into a key value pair and store it into a hashmap to make comparisons later on. However, I do not want to have a hashmap with 2 million key value pairs in the interest of space comple…