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Java Program that loads text documents and ranks them based on amount of repeated words – keep getting file not found error


I’m creating a Java program that can load different text documents (in this case, the first chapter or so of four different novels) and then print them out in order of their vocabulary ranks. In other …

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Collection serialization issues


So my issue is a bit complex. I’ve got one User class, which I put into ConcurrentHashMap. One class corresponds to one user. Key is user’s ID. I’m using GSON to serialize this …

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Using queue to rearrange every other integer


I’m trying to figure out how to take in an integer and rearrange them so that every alternating character is saved (So the [1, 2, 3, 4, 5, 6] would return [1, 4, 2, 5, 3, 6]). I think a queue would be …

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What is the purpose of fairness parameter in REENTRANT LOCK in JAVA?


I found the following text while going through Java doc of Reentrant lock: fairness of locks does not guarantee fairness of thread scheduling. Thus, one of many threads using a fair lock may obtain …

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Trying to get Spring Boot app to send an error response message when request does not have “Content-type” HTTP request header


I am still really new with Spring Boot, but I have a web application, that is setup to handle either XML requests (when the requests have a “Content-type: application/xml” header, or JSON …

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get kth-largest-element-in-an-array – implemented using maxheap but getting time exceeded in leetcode


I am trying to solve this leetcode challenge . I implemented a MaxHeap and tried to popout the values to get the Kth largest element in the array but I get a time limit exceeded. Is there any issue …

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How to make Intellij generate one-line comment for field instead of multi-lines?


When I Alt+Enter on private static final String FOO = “foo”; and select “Add Javadoc”, Intellij(version 2020.2) generate a multi-lines style comment like this. /** * …

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@NotNull constraint don’t work for a application property value spring boot


I want to prevent a NotNull value of a application property. In my application.yml spring: security: oauth2: resourceserver: my-property: classpath:a/b.json my Property class: @…

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Spring Boot Hibernate Many To One not saving joinColumn result


I’m trying to store images in MySQL using Spring boot, I have a user entity and I want to create a Many To One relationship between my FileUpload entity. I’m using react on the front end and the …

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Redirect to another page with @RequestBody


I’m struggling with something. i pass JSON data to my controller $.ajax({ type:’POST’, url:’${pageContext.request.contextPath}/saveMovBienes2′, …