Java 归档 - Page 227 of 655

FileNotFoundException when using java properties file

I asked this question after doing a lot of research, and implemented it in my code after research, but I finally got F……

Java

2020-04-26

Java – how do I add a scrolling view to the entire activity?

I tried to add a scrolling view around everything on the active layout, but it gave me an error that it can only be pl……

Java

2020-04-26

Java – hashtable: why do get methods synchronize?

I know that hashtable is synchronous, but why is its get () method synchronous? Is it just a reading method? Solution ……

Java

2020-04-26

Java – JSP – date format and Google cache

I want to display the formatted date on the JSP page, so I use: <fmt:formatDate pattern="MMM d" value="${myEvent.da……

Java

2020-04-26

Java – print and access lists

I am reading the file and storing it in T1 How do I access elements in T1? When I try to print it, I get an address in……

Java

2020-04-26

Java – numberformatexception when converting from string to byte

Something strange happened to me I have a binary number in string form, especially "01001100" But I get the above exce……

Java

2020-04-26

Bitwise XOR Java length

I use Oracle Java 7.51 on Ubuntu 12.04 and try to do so long a = 0x0000000080000001 ^ 0x4065DE839A6F89EEL; System.out.……

Java

2020-04-26

Java – in clojure, is (=’a’a) refers to ‘the same atom’?

In some implementations of Common Lisp, we can say that for the following expressions (eq 'a 'a) It's true, because 'A……

Java

2020-04-26

Java – when I say red, bufferedimage draws white

It must be a very stupid solution, but I'm blind I have this Code: BufferedImage bi = new BufferedImage(800,600,Buffer……

Java

2020-04-26

How can I pixelate JPG with Java?

I'm trying to pixelate JPEG using java 6 and I don't have much luck It needs to work with Java - not an image processo……

Java

2020-04-26

Java – why use constants instead of enumerations?

I have seen the use of many constants in many Java libraries, in which enumerations can be easily used Even in swing, ……

Java

2020-04-26

Java – always return to the login screen

I have an application that starts the splash activity screen for 5 seconds, then opens the login activity screen, then……

Java

2020-04-26

Java – spring boot security will not throw 401 unauthorized exception, but 404 not found

My authentication is based on spring boot security example What do I need to change to throw 401 exceptions? I have an……

Java

2020-04-26

Java – convert images to black-and-white images

I use the following command in ImageMagick to convert the image to black and white: convert myimg.png -monochrome out……

Java

2020-04-26

Java – how to make a method take any type of array as a parameter?

I want to be able to take any array type as an argument in the method: public void foo(Array[] array) { System.out……

Java

2020-04-26

Java close PDF error

I have this java code: try { PDFTextStripper pdfs = new PDFTextStripper(); String textOfPDF = pdfs.getText(PD……

Java

2020-04-26

Java – prevents ehcache from attempting to access the Internet at startup

I have a fairly simple non clustered application running ehcache with spring and hibernate I received this error at st……

Java

2020-04-26

Increase hexadecimal value (Java)

Can you add hexadecimal values to Java? Hexadecimal value = hexadecimal value Solution This depends on how hexadecimal……

Java

2020-04-26

Java – refactoring foreach to for loop

I have a Java foreach loop (here is a simplified version) List<String> names = getNames(); for(String name:names……

Java

2020-04-26

Super cannot be the first line constructor in Java when solving the problem

I'm using the csvreader class, which takes local files as input But now, I need to be able to read local files and fil……

Java

2020-04-26

Java – I can have different copies of static variables for each different type of inheritance class

I want the same static variable with different values, depending on the type of class So I will public class Entity { ……

Java

2020-04-26

What is an effective way to parse strings in Java?

How should I use java to parse the following string to extract the file path? ？ Represents any number of random chara……

Java

2020-04-26

We need advice on server software implementation using java NiO

I'm trying to calculate the load on the server I have to build I need to create a server and register one million user……

Java

2020-04-26

Java – how to make a variable of type float null

If my float variable is set to 0, my code works, but if my variable is null, I want my code to work How can I do that?……

Java

2020-04-26

Java – syntax errors on tokens. Delete these tokens

This is the code I provided for the problem package ca.rhinoza.game; import java.awt.BorderLayout; import java.awt.Ca……

Java

2020-04-26

Java – how to find the length of a group?

I tried to find a set of lentgh from my preferences set = prefs.getStringSet("key",null); int X = set.leng……

Java

2020-04-26

Java – Egyptian scores in C

The ancient Egyptians only used fractions in the form of 1 / N, so any other fractions must be expressed as the sum of……

Java

2020-04-26

How to combine two resultsets in Java?

I have two result sets (RS1 and RS2) with the same fields Now, how to merge the two result sets into one so that dupli……

Java

2020-04-26

Why is lockless concurrency so large (in clojure)?

I was told that clojure has lock - free concurrency, which is important I use a lot of languages, but I don't realize ……

Java

2020-04-26

Java – add values to terms in the map

I'm trying at @ L_ 403_ 0 @ to add a specific value to the map, where the key is very complex, but the value is a simp……

Java

2020-04-26

Java’s RAM usage does not correspond to what the task manager says

I play the Java JVM by making 1024 ^ 3 (basically 1GB) byte arrays Before using the task manager (viewing the process)……

Java

2020-04-26

Java – how do I add a scrolling view to the entire activity?

I tried to add a scrolling view around everything on the active layout, but it gave me an error that it can only be pl……

Java

2020-04-26

搜索内容

FileNotFoundException when using java properties file

Java – how do I add a scrolling view to the entire activity?

Java – hashtable: why do get methods synchronize?

Java – JSP – date format and Google cache

Java – print and access lists

Java – numberformatexception when converting from string to byte

Bitwise XOR Java length

Java – in clojure, is (=’a’a) refers to ‘the same atom’?

Java – when I say red, bufferedimage draws white

How can I pixelate JPG with Java?

Java – why use constants instead of enumerations?

Java – always return to the login screen

Java – spring boot security will not throw 401 unauthorized exception, but 404 not found

Java – convert images to black-and-white images

Java – how to make a method take any type of array as a parameter?

Java close PDF error

Java – prevents ehcache from attempting to access the Internet at startup

Increase hexadecimal value (Java)

Java – refactoring foreach to for loop

Super cannot be the first line constructor in Java when solving the problem

Java – I can have different copies of static variables for each different type of inheritance class

What is an effective way to parse strings in Java?

We need advice on server software implementation using java NiO

Java – how to make a variable of type float null

Java – syntax errors on tokens. Delete these tokens

Java – how to find the length of a group?

Java – Egyptian scores in C

How to combine two resultsets in Java?

Why is lockless concurrency so large (in clojure)?

Java – add values to terms in the map

Java’s RAM usage does not correspond to what the task manager says

Java – how do I add a scrolling view to the entire activity?

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