Java 归档 - Page 228 of 655

What is the difference between Amazon dynamodbclient and dynamodb classes in their Java SDK?

I'm using Amazon's dynamodb Java SDK and want to know the difference between Amazon dynamodbclient and dynamodb classe……

Java

2020-04-26

Accessing smart cards using java

Due to project analysis, I am trying to understand how Java accesses smart cards I wonder if there is any type of virt……

Java

2020-04-26

And preg_ What is the same Java as replace?

<?PHP <?PHP $str = "word <a href=\"word\">word</word>word word"; $str = preg_replace("/word(……

Java

2020-04-26

Java – appropriate method for subclassing guava’s immutableset

I have a class class Receipt { private Set<Order> orders; public Receipt(Set<Order> orders) ……

Java

2020-04-26

Assigning operators in Java

I have two ArrayLists in Java: mProductList = new ArrayList<ProductSample>(); mProductList2 = new ArrayList<P……

Java

2020-04-26

Java – validation does not apply to nested objects in play framework 2

I'm using constraint annotation to verify the objects in play! Frame 2 It applies to top - level objects, but not nest……

Java

2020-04-26

Java – hibernate separates queries as part of conditional queries

Java experts can help me write separate queries as part of the conditional queries in the following SQL statements sel……

Java

2020-04-26

Java polymorphism, no problem

If there are three classes A. B and C. class B extension a, class C extension B Class A has equal method: public boole……

Java

2020-04-26

Java – how to lighten or darken bitmaps

For example, how do I get an existing bitmap Bitmap bm = BitmapFactory.decodeResource(getResources(),R.drawable.somebi……

Java

2020-04-26

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

Java – executes code blocks atomically

How would you answer the following questions? Will I achieve this through the production method? public final AtomicIn……

Java

2020-04-23

Java – inject new methods and properties into classes at run time

Is there any way to inject new methods and properties into classes at run time http://nurkiewicz.blogspot.com/2009/09/……

Java

2020-04-23

搜索内容

What is the difference between Amazon dynamodbclient and dynamodb classes in their Java SDK?

Accessing smart cards using java

And preg_ What is the same Java as replace?

Java – appropriate method for subclassing guava’s immutableset

Assigning operators in Java

Java – validation does not apply to nested objects in play framework 2

Java – hibernate separates queries as part of conditional queries

Java polymorphism, no problem

Java – how to lighten or darken bitmaps

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

Java – executes code blocks atomically

Java – inject new methods and properties into classes at run time

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