包含标签：Java 的文章
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java – Reflection Class. Forname() looks for classes $1 and $2. What are they?
See English answers > java compiled classes contain dollar signs When checking the string input userinput, see if a…… -
I got Java lang.NoClassDefFoundError：org / springframework / web / context / WebApplicationContext
I added spring - web. Net to my classpath 4.0. jar. It contains the class – org springframework. web. context. WebAppl…… -
Java – use hibernate envers to find recently deleted entities
So my problem is that I need to find all recently deleted entities of a specific class, that is, entities deleted sinc…… -
java. lang.UnsatisfiedLinkError：java. library. There is no sqljdbc in path_ auth
I created a Java application Jar when I try to run from CMD Jar, I received an error I've been looking for and finding…… -
Java – how to improve this singleton?
I have a class that will be single MySingleton. getInstance(theFile); Files are required only when building a singleto…… -
How do I call other methods of the Java runnable object?
I got some skeletons of classes I had to implement (I personally don't really agree with the program design, but I don…… -
Java – recursively find the object and return null after finding it
I have created a recursive method to find jcomponents by name This method looks for the correct component, but it retu…… -
Java’s fastest hash function
I have a Boolean string with a length of 128 characters (such as "01100.. 001") (indicating that 128 numbers are 0 / 1…… -
What is the best way to print multidimensional arrays in Java?
I recently started the mutltidimensional int array in Java Until then, one - dimensional arrays are enough Print those…… -
java – ArrayList> to String [] []
It looks like a JTable construct, like string []]... But I like to use smarter containers until I have to use somethin…… -
Java – wait(), notify() – which thread is unlocked first?
Try to understand wait() and notify() I know when thread a enters wait (). It will be awakened by notify () from other…… -
How do I round numbers in Java?
For this program, I write the number of minutes I am accepting user input, and then round it to the next hour >1 mi…… -
Java – naming convention for O / R mapping
I map my database tables to my Java objects Generally speaking, I name my form in the plural, because the form holding…… -
Java – wicket table with variable number of columns
I have been creating tables by adding a listview in the page (providing my data as list < MyObject >) and assign…… -
Java – define multiple hash functions for the same object
I have several collections that store objects of the same class, but I want to specify a different identification func…… -
Isn’t Java doing things asynchronously?
I'm trying to learn Java. I'm reading a tutorial that says: while (N <= 0) { TextIO.put("The starting po…… -
Java – why does the shift right operator produce zero instead of one?
I'm learning Java by myself. I practice in thinking in Java On page 116, exercise 11, you should move an integer right…… -
Java me – J2ME app and browser on mobile phone
Recently, I started to develop J2ME app prototype I noticed how difficult it is to develop a nice user interface Consi…… -
Java – last working day of last month and localdate
public static String getLastWorkingDayOfPrevIoUsMonth() { public static String getLastWorkingDayOfPrevIoUsMonth() { …… -
Java – what database do you want to use?
I'm new to database, but I think I've finally encountered a situation where flat files don't work properly I'm writing…… -
Java – why are array assignments incompatible, even if their data type is?
byte b =10; byte b =10; int a = b; // Primitive data type widening // Works perfectly fine The ab…… -
Java – an effective implementation of equals (object o)
After I finished writing the title, I read so post, but still decided to discuss the implementation of bugs in Java Th…… -
Java – Android navigationview cannot respond to the click event on the project
I'm trying to add a Navigation view to my application, but for some reason, I can't make it respond to any click event…… -
Arguments of type ‘volatile char *’ are incompatible with arguments of type ‘const char *’
I have a function whose prototype is as follows: void foo(const char * data); Elsewhere in my code, I have a global va…… -
Java arithmetic
Why does this code return the wrong value? int i=Integer.MAX_VALUE+1; long l=Integer.MAX_VALUE+1; System.out.println(l…… -
If HashMap Java exists, it gets the value
I want to get a value from hasmap, but sometimes the value does not exist, so I did this: int var = 0; if (hashMapHous…… -
Java – combine allmatch, nonematch, and anymatch on a single stream
I think there is the following logic: (I know it doesn't work because it consumes the stream more than once) But I don…… -
Javadoc cannot run in Android projects
I use eclipse 3.5.0 on Ubuntu 10.04 2. Android development I installed: >Sun's JDK comes from the Ubuntu repository…… -
Java is the last day of next month
I have a variable of nowdate type. I want to set the variable nextdate to include the last day of the next month For e…… -
Use Java stream to get the index of Min size list in ArrayList
I have a list of integers, such as LIST1 = (1,2,3) and List2 = (0,1) My list contains LIST1 and List2 It can contain m…… -
Java – abstract base class in dart
I've been programming in Java for nearly two years, but now I'm turning more to web programming, so I'm turning to Jav…… -
Java – on COM sun. Using generics in codemodel
Use COM sun. Codemodel, I want to generate a generic LinkedList field I can create an original field using the followi……