包含标签：Java 的文章
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Java – check in scope precondition
I like the premise of guava, but what I really need is another way - check whether the number is in the range SMT like…… -
How to deny that a value is the same as the value in Java [integer. Min_value]
How are these values the same in Java? -Integer.MIN_VALUE == Integer.MIN_VALUE The values are: -2147483648 : -21474836…… -
Java – the declaration of variable name declares the type of value to be stored? A prank?
Therefore, I have this true / false question in my computer science class (we use Java): (the word "type" in the quest…… -
java. Lang. outofmemoryerror: Java heap space error when executing millions of queries
In my application, I need to perform millions of queries on MySQL database The code is as follows: for (int i=0; i<…… -
Java run static method in new thread
I just started learning Java, and I encountered a slight obstacle involving threads I have a static method. I want to …… -
Java – how to parse strings safely?
We know that using string join to form SQL query will make the program vulnerable to SQL injection attack I usually us…… -
How to check whether ArrayList contains 2 values?
Is there a way to check whether a collection contains one or more values and has better performance than using the con…… -
Java – propertynotfoundexception when using JSTL with Boolean value
I have a filebean that renames Boolean variables It has the following code public class FileBean { private boolea…… -
Java – resteasy @ path with zero or more path parameters
I use resteasy. Com in API development My website is http: / / localhost: 8080 / project / player / m or http: / / loc…… -
Java garbage collection scenario
I'm going through the Java garbage collection process and different scenarios for GC The following is what I am confus…… -
Java – provides multiple types of sorting for objects
Suppose I have a Java object with multiple string fields public class Person { private String field1 // keeps …… -
Java,UnsupportedClassVersionError. How can I solve this problem
I was doing my homework during the solar eclipse. It didn't report an error or even a warning When I tried to compile …… -
Clojure – why can’t let be used with vector?
replace (let [x 1] (my-expression)) I'm trying to use: (let (vector x 1) (my-expression)) Don't ask why, I prefer ordi…… -
Java – returns the primary activity from any activity on the Android application
I'm developing an Android application with an action bar and a dashboard When the user clicks the "application logo" b…… -
Java – how to handle tags in Android
I've been looking for some time and haven't been able to find the right answer for this one To make a long story short…… -
Java – builder pattern: why do we need it build()？
When studying the builder pattern, the standard pattern is as follows: new SandwichBuilder().salami().pastrami().cat()…… -
Haskell: update two or more tvars atomically probably?
Can a transaction update two different tvars atomically? That is, can I combine data structures from many TV dramas to…… -
Why doesn’t clojure follow the most common indentation style in Java code?
I look at the Java code in clojure I find indentation strange to me I'm used to it http://www.oracle.com/technetwork/j…… -
java – debug. Keystore does not exist
I'm trying to generate MD5 fingerprints, but the problem is that every time I try to enter the whole code, I say debug…… -
Java – how do I set up the eclipse editor screen and package browser view?
In fact, I came up with a problem I hadn't encountered in a long time When working on projects, I often see my package…… -
Tooltip background (using JavaFX CSS)
Simple question, but I can't find the answer anywhere (I don't think I know what to look for...) How to prevent my too…… -
Java – if I increase the memory heap, it will increase GC time
My current application runs on a normal GC cycle with 2GB of memory I want to increase JVM memory to 4GB to improve ap…… -
Java, convert date to string and return the date that generated the error
I tried to convert date to string and then back to date But I find that the last date is different from the original d…… -
Java – sort arrays by time
First, I use an array to get such information: // Tuesday array[2][1] = "tuesday"; array[2][2] = "20:00"; // Wednesda…… -
Java – cursorindexoutofboundexception: request index 1, size 1
This is me again. There is a SQLite problem with Android At present, I get a "cursor index out of boundary exception: …… -
Can @ unique () be executed inside Java in xpages?
When I want a unique key for a file, I prefer @ unique() I like it based on user name and time Is there any way to get…… -
Use the for loop to traverse the list in Java
How to use index to iterate list data structure For example, consider a list sentence where each element is a word Can…… -
Java – converts jtextfield input to integer
I'm a novice in Java. I'm trying to convert the input from jtextfield to an integer. I've tried many options, but ther…… -
Generating XML from classes using java
I asked this question before: Generate XML from a class I want to do this in Java Can I perform the same operation on …… -
Java – cannot find files using FileReader
I'm developing a project for my course. We should read one called samplesearch Txt file, the following is the code I a…… -
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……