Java
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Java – the question I tripped over in the interview
I was asked several Java interview questions. I don't know how to solve them. I can use some answers >Write a metho…… -
Can Java constructors construct subclass objects?
Is there any way to modify the class constructed in the constructor? public class A { A() { //if (condition) ret…… -
Java – how do I check for memory leaks?
Can I check for memory leaks without entering the code I have my application and I want to check for memory leaks In m…… -
Java – how to read a user’s char on the command line
How to read the user's char from the command line I am familiar with readint() There is no such thing as character Thi…… -
Java – structured stream exception when using additional output mode with watermark
Although I am using watermark (), when I run my spark work, I receive the following error message: From what I saw in …… -
Java – change eclipse getters setters syntax
Is it possible for eclipse to generate getvar1 () instead of getvar1 ()? (with capital g) Solution I doubt it very muc…… -
Java – find specific file types from folders and their subfolders
I'm writing a method to get specific file types from folders and subfolders, such as PDF or txt, but I can't solve thi…… -
Multithreading – clojure – effectively increases the number in the list at the same time
Short version: what is the right way to store hundreds of numeric lists in clojure, increasing each number millions of…… -
Java – what is the purpose / purpose of abstract classes? Look for real-world examples
Can someone show me an example of an abstract class in Java? Something with real - World Applications (rather than tex…… -
What is a “runtime class” in Java?
I try to understand object The function of the getClass () method Documentation means that it "returns the runtime cla…… -
Java – maximum flow using custom comparator
The following is my specially written code for using a custom comparator with Max in Java 8 stream import java.math.Bi…… -
Java – how to disable playback 2.6 csrffilter
I was recently migrated to 2.6. When I called my API from the postman about filters, I got 403 replies At first, when …… -
Java – how’s it going? Listening location setting is turned on (android app)
So I spent weeks working on my Android application and studying the best way to achieve what I need to do, but I still…… -
Java – Tomcat and VM
It's really hard for me to understand where Tomcat actually runs It is executed in the JVM, which executes servlets Or…… -
Java – I-phone VM for Android
I'm considering setting up a project to create an I-phone virtual machine for Android 2.0 (read Motorola Droid). Befor…… -
How to determine whether a class is equal to or extends another class (Java)
So I'm writing a minecraft mod, in which I successfully added a pistol, which can handle various support classes, ray …… -
Java – add schema names to entities in spring data?
Error using Oracle dB and spring data The error is: ORA-00942: table or view does not exist The reason for this error …… -
I have the following java code problems
public class b { public class b { public static void main(String[] args) { byte b = 1; long l = 12…… -
Java – how do I get the file list from the SFTP server?
I have a problem and hope to get a solution I also wrote some code, but I need to make some changes Question: I have a…… -
Java – switches the number in the int array according to the mode
I've been scanning the Internet and trying to come up with a solution for this simple program. Basically, users enter …… -
Java – Dao class method naming
I'm using spring MVC and hibernate to build a small java web application. I'm confused about the naming of Dao class m…… -
Java reflection: finding fields of subclasses
I have a class hierarchy as follows: (= > indicates the subclass of "yes") anonymous instance class => abstract …… -
Java – what is the difference between putting the most likely real conditions in if, else if, or else
Is there any difference in putting the most likely conditions in if, else if, or else conditions For example: int[] a …… -
Java – generics and comparators
I was studying generics and found that the following code gave compile - time errors when comparing methods class A<…… -
Infinite loop in Java
I'm new to Java I tried to extract employee data from a text file and store it in a collection I use stringtokenizer t…… -
Java – save values in a loop
I'm trying to read the value of my country array string, which reads CSV files InputStreamReader reader = new InputStr…… -
Java – try to parse the date time in PDT into zoneddatetime representation
How can I parse the date time value in the PDT time zone? 06/24/2017 07:00 AM (PDT) I want to maintain time zones so t…… -
Java – how to parse the “DD mm” date format to get the current year? “
I have to use java to parse the date in "17 - Jun" format The problem is that when I try to parse the "DD mm" format u…… -
Java problems for beginners (string output)
So I'm reading the input of a file that says these lines: NEO You're the Oracle? NEO Yeah. So I just want to ou…… -
Java – stream result using struts 2
I tried to use stream results to return images from a struts 2 application I seem to be having trouble configuring the…… -
Why can’t the java compiler solve this problem?
Why can't the compiler from collections. In the following example Emptyset() infers the correct type of result? import…… -
Java compiler replaces StringBuilder with concatenation
Here are some simple java code: String s = new StringBuilder().append("a").append("b").append("c").toString(); I compi……