Java 归档 - Page 273 of 655

Java – delete element from set

I'm trying to delete all strings of uniform length in a group So far, this is my code, but I can't get the index from ……

Java

2020-03-16

Java – what is the difference between passing by reference and calling by reference?

What is the difference between calling by reference and calling by reference in a reference? Solution Java does not pa……

Java

2020-03-16

Java – what does it mean for deprecated methods and how to resolve the resulting errors?

Why do I have a deprecation error on the line containing setwallpaper (BMP), and how to solve it? switch(v.getId()){ ……

Java

2020-03-16

Java – what is the best way to listen for changes in JTable cell values and update the database accordingly?

I am using multiple JTable builds and applications, and I need to detect when cell values change so that I can update ……

Java

2020-03-16

Should I check the bytecode generated by the java compiler?

No, >The JIT compiler may "convert" bytecode to something completely different. > It will lead you to premature ……

Java

2020-03-16

Java – access Tomcat context path from Servlet

In my servlet, I want to access the root of the context so that I can do some JavaScript scaling Minify can be done as……

Java

2020-03-16

Java – the easiest way to read Excel files in groovy?

Are there any warappers / utils that can be used to read Excel files in groovy I'm looking for something similar to gr……

Java

2020-03-16

How to learn from Jar load folder?

OK So I have a very simple question: I want to be able to start from the running Jar file, but I can't make it work Th……

Java

2020-03-16

Java prints an array of objects

I know there are many web pages about this problem, but I can't understand it in my case I need to print an array of o……

Java

2020-03-16

Java – play framework routing does not work

I just want to follow the zentasks tutorial of the play framework（ http://www.playframework.com/documentation/2.1.0/J……

Java

2020-03-16

java – com. sun. AWT package usage

I found a java code and wanted to use it in my project It contains these imports that my JDK does not have: import com……

Java

2020-03-16

Java – gets the height of the textview

I have some text to put in textview I did it with settext() Now I need to find the number of lines or height of text i……

Java

2020-03-16

Java – how to add ArrayList in JSP

<html> <html> <head> <Meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1……

Java

2020-03-16

Java – in the method m of class C, is this Getclass() is always c?

In the method m of class C, is this Getclass() is always c? Solution No, No If there are subclasses class C { Class……

Java

2020-03-16

Java – how do you decide when to upgrade libraries in your project?

I work on a project that uses multiple open source Java libraries When upgrading to these libraries, we tend to follow……

Java

2020-03-16

In Java, should resources be placed in the package / source hierarchy?

Suppose I develop a game and put it into the package structure: com.dxmio.games.breakout So where is the "best practic……

Java

2020-03-16

Can I declare a 1-bit variable in Java?

My algorithm uses a huge Boolean array. As I taught, each boolean variable needs 1 byte Declare a Boolean array anyway……

Java

2020-03-16

Java DOM XML cannot get child

My XML looks like this: <ConnProf ConnProfID="1111"> <ConnNum>1</ConnNum> <IsMSPA>false<……

Java

2020-03-16

java. Lang.illegalstateexception: the response submitted in the servlet cannot be forwarded

See English answer > java Lang. IllegalStateException: cannot (forward | sendredirect | create session) after respo……

Java

2020-03-16

Javafx-2 – internal framework in JavaFX

I found this example of an internal framework http://docs.oracle.com/javase/tutorial/uiswing/components/internalframe.……

Java

2020-03-16

Java stream – the result is obtained after splitting the string twice

I have a string: String modulesToUpdate = "potato:module1,tomato:module2"; I want to get it from it: module1 module2 F……

Java

2020-03-16

Java – what is the best way to find the first repeating character in a string

I wrote the following code to detect the first duplicate character in the string public static int detectDuplicate(Str……

Java

2020-03-16

JSF – P: autocomplete itemlabel throws “class’ Java. Lang. string ‘has no attribute’ label ‘.”

I'm changing from icefaces to primefaces (I really want to change RichFaces, but I won't cause errors in the new versi……

Java

2020-03-16

In Java, is there a more elegant way to remove duplicate strings from the ArrayList of strings?

So, in short, I have a Java job assignment that needs to manipulate the long ArrayList of strings in various ways (wha……

Java

2020-03-16