包含标签：Java 的文章
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Why is the string method substring () not in camelCase in Java?
According to Java standards, we should follow camelCase But why is the string method substring () not in camelCase? Is…… -
Print a list in Java?
I want to print a list in Java @H_ 301_ 8@ @H_ 301_ 8@ r1 r2 r3 r4 This is the code: @ h_ 301_ 8@ @H_ 301_ 8@ public s…… -
Java – what is the best remote technology for mobile applications?
I have a Java backend that needs to expose services to clients running in the following environments: > J2ME > W…… -
Being confused by Java generics requires a cast
I'm confused about the following code: import java.util.ArrayList; import java.util.LinkedList; import java.util.List;…… -
Java – ArrayList and indexof problems of my objects
I have an ArrayList problem with Java I created an object that contains two attributes X and Y. now I loaded some obje…… -
Java – use bouncycastle to read the elliptic curve private key from the file
The bouncycastle encryption API allows the use of regular Java Security package objects create and validate digital si…… -
Replace the string in R with the pattern and replace the two vectors
Suppose I have two such vectors: a <- c("this","is","test") b <- c("that","was","boy")@H_301_12@ 我也有一个像…… -
Java – how do I call methods for all objects in ArrayList?
So I have an interface, pet, as follows: public interface Pet{ void Eat(); } This is achieved by: public class Pup…… -
Java – joda time – month difference between two dates
See the English answer > number of days between two dates in joda time DateTime date1 = new DateTime().withDate(201…… -
Using pow () – method in Java
I am writing a program in Java. The user should enter an integer n. then my program should create an array with entrie…… -
Cron work for Java programs
I'm using a java program that sends emails after some file transfers I am using eclipse to write program code How to s…… -
Recursive merging of Java – N-level mappings
Is there any way to deeply merge maps in Java? I've read some posts about it, but most solutions seem to deal with onl…… -
Java – how do I do this?
I'm a beginner. I want to write java code in eclipse The program takes linkedlists of two integers (for example, a and…… -
Java Rounding Up
How do I set the value of numbergrade so that if it is 89.5, it becomes 90 Numbergrade is treated as double, but makin…… -
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Java – why does the code in finally execute even if it is returned in a try block?
Code: public String get() { try { //doSomething return "Hello"; } finally { System.out.print("Finally")…… -
Why did you choose to use the finally statement instead of the catch statement? (JAVA)
I'm new to Java and I'm still trying to understand the basics I've been learning exception handling in the form of try…… -
Java – how to convert a double to a string in Android
I want to convert a string to double in my constructor. I can't change it in the constructor, because in a process, th…… -
Java – static variable reset on program restart
I have a problem with static counter variables In the super class ("card"), I have a variable to calculate the number …… -
String. The split (string pattern) Java method did not work as expected
I'm using string Split () divides some strings into IP, but it returns an empty array, so I use string Substring () fi…… -
Java – why must the float value be declared twice?
I'm confused why floating point values must be declared as in any other value, but they must be declared before the va…… -
How do I pass an integer wrapper class to a method in Java?
Ex in Java: class A { private Integer x = new Integer(0); public void setValue(Integer q) { q = 20; …… -
Java – can I skip tracking of Android applications?
I'm planning to make an application for Android 2.1, which uses the audio device ATM to change songs every minute (thr…… -
Java – update ArrayList with HashMap
I just started learning to use HashMap and read the java tutorial, but I was in trouble I'm trying to update the list …… -
Java – create treemap visualization
I want an algorithm for creating treemap visualization Like this: an easy way to make a treemap The problem is that I …… -
Java – multiple clicks of the same button
The idea is that the button can perform one action on the first click and different actions on the second click button…… -
How do I start a background thread that does not block the main java thread?
I have the following java code: public static void main(String[] args) { new Thread(new MyRunnable()).run(); s…… -
Java – creates a list of entries and makes each entry clickable
I'm trying to create a UI with two panes In the left pane, I display a list of files and the right pane displays the c…… -
What is this widget called in Java?
I've been trying to find this widget and I don't know its name I should add the arrow key (in | de) to create the valu…… -
Java – how to set the time limit of online examination
I'm doing an online exam project because my requirement is to set a question in one page. The maximum time limit for t…… -
Java – boxed values are unboxed and then repacked immediately
I received the findugs error "boxed value is not boxed, and then repack it immediately" This is the code: Employee emp…… -
Java: why not declare static intead that passes references?
Suppose we want to make a game where you have to collect gems So we need a gem class, a gemspawner class and, of cours……