Java
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Java – hex color to RGB color
I have a decimal (non hexadecimal) color code. Using Java, I need to convert it to three RGB colors For example, 16777…… -
Java – excludes folder names from eclipse file searches
How do I exclude a folder name from eclipse file search (ctrl h)? For example, if I want to search all files but exclu…… -
Java – how to change text when scanning a barcode with zxing in Android?
When you start the barcode scanner (zxing) by intention, can you change the prompt text of "put barcode in viewfinder.…… -
Java – can the kernel be written in assembly language?
I've never done kernel programming I am an excellent programmer of Java language and often use it Now I want to do som…… -
Java – MD5 is the letter of each password worth it?
to greet, I am currently developing a project involving login system, which aims to set up as safely as possible What …… -
Java Rest framewok
Which is a good java rest framework? I want it to be deployed with Tomcat 6 Solution See my answer: Restful web develo…… -
Java – hibernate or JPA?
When using spring 3.0, hibernate or JPA is recommended What are their advantages and disadvantages when used with spri…… -
java – XML vs JSON. Which is better for storing small pieces of data?
See English answers > What are the pros and cons of XML and JSON? [closed] 17 1. Which is better? XML or JSON for s…… -
How to get value from Java enumerations
I have an enumeration that looks like: public enum Constants{ YES("y"),NO("N") private String value; Constants(…… -
Java – ArrayIndexOutOfBoundsException when iterating through all elements of an array
How to handle this exception "ArrayIndexOutOfBoundsException" public static void main(String [] arg) { int [] a=ne…… -
Java static method parameters
Why does the following code return 100 1 1 instead of 100 1 1 1? public class Hotel { private int roomNr; public Hote…… -
Java Native array length
I have a 2D binary array in Java. It is basically a value table. I want to know how many rows it has It declares elsew…… -
How do I access memory locations in Java?
Can we access memory locations in Java directly or indirectly? If we try to print the object, it will print the hash c…… -
How to check whether the variable name contains a string, and then output the string variable content
So I have these four variables private final String PROG_DEPT = "PROGRAMMING/ENGINEERING"; private final String DES_DE…… -
Java – from application Properties spring boot read value
My spring launch application has the following application bindings > src >Main >Java > resources > app…… -
Switching cases with string Java
After using java for a long time, I found that, unlike other languages, Java does not support switch cases with string…… -
Java – one to many one-way parent-child ID cascade saving
When I try to save the ID from the parent class to the child class, I keep getting errors I tried all types of mapping…… -
Why am I on 1.8 0_ 45, Java Lang. nosuchmethoderror: createimageusingnativesize error
In some cases, the code used to process a single image dragged and dropped from some webrowsers (Firefox) is in 1.8 0_…… -
Java – randomly select a node from the n-ary tree
My node class: import java.util.ArrayList; public class Tree<T> { private Node<T> root; public …… -
How to delete an object from a linked list in Java?
There is a problem in my code. I made a sample program to display the EMP details in the link list. Now the problem wh…… -
Akka distribution pub sub: Java implementation does not work
Subscriber's main class: application java package com.mynamespace; import org.springframework.boot.SpringApplication;…… -
Java – why is this called backtracking?
I read it on Wikipedia and Google it, But I can't figure out what "backtracking algorithm" means I saw this solution i…… -
How do I bind the Java spring time attribute to the thymeleaf field?
I have a problem binding a java time attribute to the thymeleaf field@ H_ 404_ 7@ <input th:field="*{startTime}" ty…… -
How to modify a value in a Java property file
I have a config Properties file, which contains configurable properties, such as database connection details in webapp…… -
The java interface extends the problem
I have to implement an RMI server, which will be the front end of the other two RMI services Therefore, I think it is …… -
Java – sessionexpiredexception occurs when trying to create a post using Google blogger API oauth2
I use the following code to update an existing blog post I received sessionexpiredexception What on earth did I do wro…… -
Java – how do I prevent eclipse from moving my line comments after comments?
I set some comments on the class and comment on the same line as the comments, for example: @SampleAnnotation // sampl…… -
RX Java – with observable Just() and rxjava flatmap with one parameter
I'm using RX Java, and I have a question to understand flatmap Observable.just(1) .flatMap( …… -
java – Android gms：play-services：8.1. 0 DexIndexOverflowException
After I changed GMS: play services: 7.5 0 to 8.1 After 0, the gradle build fails with multiple DEX exceptions The erro…… -
What’s the point of putting parameters before parameters in Java / Android?
What is the difference or meaning of placing the $symbol before any variable or parameter? for example Suppose this is…… -
Java – IllegalStateException: arrayadapter requires the resource ID to be textview
I ran my code once. I ran it again. Now it crashes every time Logcat gave me this: 04-11 03:15:57.293: D/dalvikvm(344)……