包含标签：Java 的文章
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Java – how to create a new object with the constructor in array list as one of the parameters?
I have a problem with a constructor that takes ArrayList as one of its parameters public class ItemisedProductLine ext…… -
Java – super fast autocomplete using binary search in sort files (300000 lines)
In my android app, I want an input field with autocomplete The number of projects is about 300000 The best solution se…… -
Java – \ u0026 \ u0026 operator problem
In the following code & & the syntax error is given in the if else statement. I'm not sure how to solve it Can…… -
Java – 2D ArrayList
This is just a very small problem... I seem to have encountered too many complex problems: I have to implement an inde…… -
Use the string comparison in Java again
Novice problem, but I have this Code: import java.util.*; import java.io.*; public class Welcome1 { // main meth…… -
How to handle Boolean values in Java through bitwise operators
Consider this example int i=11,j=5; boolean b=true,c=false; System.out.println(b&c); // --> output=false System…… -
AWT or swing for Java for GUI building?
I need to form a fairly simple GUI for the server monitoring process It will have tabs that can cause log tailing, res…… -
Java 8: changing the value of the entryset stream
I have the following settings: My problem is that strings as project map values are marked with tags I want getitems (…… -
How do I return flags and optional messages in Java?
I want to write a method in Java to verify whether some data exists for some conditions, confirm that the data is vali…… -
Java – byte constructor and byte Differences between valueof () methods
Byte byte1=new Byte("10"); Byte byte1=new Byte("10"); Byte byte2=Byte.valueOf("10"); System.out.println(byte1); Syste…… -
Java – using transformers. Java in Hibernate Aliastobean populates sub beans
I have the following beans: Address { String name; String number; String zipcode; String town; } MyEn…… -
java – @Override on Implementation
Will you put comments in the implementation class methods? Is it useful? If you input wrong or no input, it is a compi…… -
Java of jar file
I created a Java application and packaged it into a jar file on the windows platform Now I want to deploy the jar file…… -
Is this statement correct in Java?
I want to use datagram socket to transfer data between two computers I use the following lines: host=InetAddress.getBy…… -
Java – why is this non greedy regular expression more than I want?
I think it should return to "state, country", but it is returning to "country" System.out.println("city,state,country"…… -
Java: trying to get the percentage of integers, how to sort it out?
I have two integer values, X and the sum I tried to find the percentage of total X That's what I'm doing now: Percenta…… -
Java – sort the vectors of custom objects
How to sort the vectors of custom objects and select the attributes to sort? I do see this question & answer, but …… -
Java – how to enable reasonable default caching for public files in Grails 3 applications?
I have a Grails 3 application with images, CSS and JS files under Src / main / resources / public These use the 'no ca…… -
Java – duplicate resource error using Duplicate Finder plug-in
I have a project consisting of many subprojects Consider the three modules a, B, C. B depends on a and C, depends on a…… -
Java – test the browser at the same time; Received error
Now, I'm trying my first test, which will test browsers chrome, Firefox, ie and safari at the same time But I got the …… -
Can I write “foreach” functions in Java?
In PHP, you can do foreach ($array as $key = > $value) {/ / code. Can you create a function in Java to execute fore…… -
Java – IntelliJ code formatting, keeping / * package * / on the same line
In some cases, it makes sense to use package visibility for certain methods /* package */ int getSpan() { return…… -
How to use multiple threads to execute map, filter and flatmap in rxscala / Java?
How to use multiple threads to run filter, map and flatmap on observable: def withDelay[T](delay: Duration)(t: => T…… -
Java – Lucene search even if it should return no results
I am creating a Lucene search application. I use multiple instances of different analyzers and indexwriters of their i…… -
Differences between different implementations assigned to a wider range of types in Java
I know that assigning subclass implementations to variables of interface type is a best practice to maintain flexibili…… -
Java – layout parameter layout_ Weight is ignored unless layout is also specified on the tag_ Width and layout_ height
I treat this message as an error and cannot run the application <include android:layout_weight="1" layout=…… -
Java – can I use the same POM Redefine imported Maven dependencies in XML?
I'm working in an application server environment, and I'm using BOM to collect dependency information, as follows: <…… -
Java – check if string x is equal to any string in string []
If the string entered by the user is equal to any string in the string array, I try to set a Boolean value of true I i…… -
Java – object cache data structure with “object expiration”
Which data structure in Java is best suited for in memory object caching, where objects have a separate expiration tim…… -
What non free tools do java developers like
Most of the developers I interact with are using eclipse (I prefer NetBeans) and will take advantage of many free plug…… -
Java – upload running files in PHP
I know it sounds strange There is a PHP file on my server, which is responsible for processing the upload The Java pro…… -
Java – class level custom annotations cannot be detected in spring AOP
I tried to intercept classes in spring with the following settings Interceptor @Aspect @Component public class MyInter……