包含标签：Java 的文章
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Java – which one to choose between calling the function twice and storing the return value in a variable?
I have the following situation I occasionally encounter similar situations Which is more suitable for the following tw…… -
Partitioning and analyzing Java arrays using multithreading
I have to initialize a floating point [12000] 12000 times through the for loop Then I scan the array for values that e…… -
Using other modes except ECB and decrypting with DES will throw “invalidkeyexception: missing parameter”
I basically use http://www.avajava.com/tutorials/lessons/how-do-i-encrypt-and-decrypt-files-using-des.html The code en…… -
Java – StringBuilder using string instead of StringBuilder
I use StringBuilder instead of string in my code But when I look at its source code, the substring () method abstracts…… -
What caused my program to hang without quitting normally? (pipeline, read system call, while loop)
I have a program. I write to the pipeline from several sub processes, and then try to read all messages written to eac…… -
Java – is there any reason to use constants instead of messages?
I want to internationalize my GWT application After reading the documentation, I can't see why constants are used inst…… -
Java – trying to prove that the complexity of binary search is O (log (n))
I tried to prove the complexity of binary search Wikipedia says the worst case scenario is log (n) This means: If I ha…… -
Java: how to output dual type numbers to integer format if the decimal number is 0
I have a dual type array {1.0,2.3,3.45,7.8,9.0,5.0} When outputting numbers, I want numbers with a decimal of 0 to be …… -
Java – is there any way to add mywebapp-1.0-snapshot-classes Jar from attachclasses configuration in Maven war plugin to mywebapp-1.0-snapshot jar？
According to Maven war plugin FAQ, <project> ... <artifactId>mywebapp</artifactId> <version…… -
Java – adjust / zoom JComponent to the page to be printed
I'm trying to scale my component so that it can be placed on a single printed page (portrait or landscape) gDiagram.ge…… -
JSF – primefaces cannot be added as a library for ear
I want to use primefaces in my Java EE 6 (JBoss as 7.1.1final) application, which has the following structure: EAR |- …… -
Java – Apache Cordova in NetBeans 7.4
I just downloaded NetBeans 7.4 and I'm trying to explore Apache Cordova This is the log ant -f /Users/jason/NetBeansPr…… -
Java – instead of rewriting, new files are created
I am trying to write to an existing file As I saw on the forum, this code should rewrite the old file, but not rewrite…… -
Java – how to use two fragments in Android drawerlayout
I tried using Android navigationdraw – http://developer.android.com/training/implementing-navigation/nav-drawer.html &…… -
Java – eclipse RCP internationalization independent plug-in
No tutorial provides specific examples of how to create international plug - in fragments I need to translate to plugi…… -
Java – deletes items from the index when looping through the list
public boolean isTwoPair() { public boolean isTwoPair() { boolean isTwoPair = false; Collections.sort(deck); …… -
Java – calendar gettime() returns only est
Calendar cl = Calendar.getInstance(TimeZone.getTimeZone("America/Los_Angeles")); Calendar cl = Calendar.getInstance(…… -
Java – I get a dead code warning when I try to write an if condition
I received a dead code warning: Topic topic = findTopicByID(point.getIDTopic()); if (topic != null) { ... } else i…… -
Java – how do I traverse an array and check for duplicates?
I'm creating a program that allows you to store 10 items in an array What I can't let the program do is that if one of…… -
Java – writing output data to a text file produces incomplete results in the text file
I have 14 lists, each with numeric or string data The size of each list is 32561 I must output a file in the format: l…… -
Build Maven jars from classes without Java sources
I want to build a maven jar artifact from the class I have no source files These classes were originally installed loc…… -
How to delete automatically generated code from NetBeans
Whenever I create a new jpanelform, NetBeans creates some automatically generated code in the initcomponents () method…… -
Java – displays the pop-up JFrame under the JTable cell?
In the past few months, I have gained a lot of experience in jtables, and I have mastered actionlisteners and creative…… -
Java serialized and non serialized objects
1) Can non serialized Java objects be sent over the network for execution by another JVM or stored in a local file sto…… -
Java – exception org. In thread “main” hibernate. Mappingexception: unknown entity:
I am using my eclipse ide log4j:WARN No appenders Could be found for logger (org.hibernate.cfg.Environment). log4j:W…… -
Java – Android Google Maps error Android view. Inflateexception: binary XML file line #6: bad start class fragment
Therefore, after performing about 15 different stack overflow problems for the same error, I have another problem abou…… -
Opencv – the cascadeclassifier in Java cannot find a face with a webcam
I tried to translate opencv cascade classifier tutorial from C to Java Works well in C This Java Tutorial works normal…… -
Java – how to use annotations to perform constructor based dependency injection on spring?
OK, so if I need to put some raw values in the constructor, what should I do? @Autowired public CustomBean(String name…… -
How do I display images immediately in a java applet?
I created a simple memory game in Java applet There is a problem with the card At first appearance, the image requires…… -
Java – how to detect the actual value of – Xmx param? Runtime. getRuntime(). Maxmemory() is inaccurate
In my case, this value is usually different from the - Xmx. I specified For - xmx810m, it returns 821035008, or 783mb …… -
Java – is there any way to set a “/ / $non-nls” comment for all strings in one line?
Does anyone know if you can set a / / $non-nls annotation tag for all strings in a line in Java... It might be like th…… -
Java – double quotation marks in Python, such as triple double quotation marks in Python
In Python, I can use: test = """My "cute" string""" Where double quotes are escaped Is there a way to simulate this in……