Java 归档 - Page 55 of 655

Java – condition check C: if always fails

c: If the test always fails to me, it will never enter the loop I use the following namespace xmlns:fn="http://java.su……

Java

2020-09-06

Java – when to use global transactions or spring AOP for transactions

Q1. I know that when we need to deal with multiple databases, we need to use global transactions But from this article……

Java

2020-09-06

Ugly Java data structure

I created the following structure that maps unique double values to one or more pairs of integers: @SuppressWarnings("……

Java

2020-09-06

Java – equivalent to JFrame What is the AWT of setdefaultcloseoperation?

We use the setdefaultcloseoperation (JFrame. Exit_on_close) method of JFrame I want to support the native look and fee……

Java

2020-09-06

Java – how to sort a two-dimensional array in dictionary order?

Suppose we have a two-dimensional array as follows: int[][] source = { { 3,5,6,1},{ 3,3,-6},{ -1,-3,-5,{ 124,43……

Java

2020-09-06

Java – how to sort conditions using the flow API

I study stream API. I have this task I need to sort the list set according to their length order, and if several rows ……

Java

2020-09-06

Java – Eclipse Plug-in – notification when opening the editor in eclipse

I want to be notified when I open the editor in eclipse What is the best way? Solution From this thread (Note: startin……

Java

2020-09-06

Java：SelectionKey. Is attach () broken?

In my java NiO implementation, I cannot make selectionkey Attach () works Basically, once the clients connect (op_acce……

Java

2020-09-06

Java – why does the JUnit test method need to be void?

I have read many places that the test method should / must be invalid, but no one says why I found no comments / JavaD……

Java

2020-09-06

How to use resourcebundle to avoid hard coding configuration paths in Java applications?

I want to eliminate the dependency of hard coded path of configuration data in my java application. I know that using ……

Java

2020-09-06

How do I resolve errors about incompatible types?

I study java projects on IntelliJ Then I found an error about incompatible types in the try catch block This is part o……

Java

2020-09-06

Can the skip method of Java – stream make the infinite stream limited?

"The limit() and skip() methods make the stream smaller. They can make the finite flow smaller, or they can generate a……

Java

2020-09-06

Java – do calls to thread safe functions also need to be synchronized?

If I am using concurrenthashmap (where put is thread safe) and I provide a common function myput using concurrenthashm……

Java

2020-09-06

Multithreading – * * * glibc detected * * * double free or corrupt (fasttop):

The clear call to qbytearray generates the following exception: *Glibc * / home / Yan / fps2 / fps2 detected: double f……

Java

2020-09-06

Java – is the public modifier in the private class of the package redundant?

Suppose I'm in package com Test in test Java declares a class test: I want to know, isn't the public access modifier o……

Java

2020-09-06

Java – installing IBM JRE on windows (non IBM machines)

I am developing a Java 5.0 application that connects to the default message queue of websphere application server My a……

Java

2020-09-06

Java – how to use “jconsole” with WebSphere 6.1?

I have deployed some managed beans on WebSphere 6.1 and I have tried to call them through a stand-alone client, but wh……

Java

2020-09-06

Java – use streams to map to 2D arrays

I'm trying to create a 2D string array using streams: String[] fruit1DArray; String[][] fruit2DArray; Map<String,S……

Java

2020-09-06

Java – how to collect logs in JBoss related to a single request?

I am developing a Java EE web application running under JBoss I want to do the following: when a user sends an HTTP re……

Java

2020-09-06

Java – how do I use a project in another project as a module?

I want to modularize the Android project so that it is easy to maintain in the future I wonder if it is possible to us……

Java

2020-09-06

I can use Java util. Set implements state transition for DFA in Java

I am working as close as possible to formally define the implementation of DFA as a learning exercise (and blog materi……

Java

2020-09-06

Can the Java / Scala / etc code tell Tomcat when to run it?

I have my webapp data in a database that can be accessed in different ways from different places There is no common co……

Java

2020-09-06

Java – jwindow never gets focus events

I have a jwindow (set to always be at the top) that you can click to get a pop-up menu If the user right clicks a wind……

Java

2020-09-06

Java – how to select overloaded methods by parameter types?

I tried to overload my method based on the parameter type: Fielderror extends to objecterror private String getMessage……

Java

2020-09-06

Java – entity update using JPA / Hibernate

resolvent

Java

2020-09-06

Java reduces the collection of strings to the mapping that occurs

Treat list as Id1_ f,id2_ d,id3_ f,id1_ g. How do I use streams to obtain simplified mappings of statistics in the for……

Java

2020-09-06

The Java 8 stream cannot resolve variables

I'm new to Java 8. I want to refactor this code and convert it into more Java 8 styles, for (RestaurantAddressee Resta……

Java

2020-09-06

Java – implementation is also overridden

I added spring security to my application and encountered a problem My userdetails implements org springframework. sec……

Java

2020-09-06

Java – how to make two clients chat with each other?

This is not my homework (my homework is just chatting with clients and servers. It works normally, especially with you……

Java

2020-09-06

Java – Convert floating point arrays

I've been writing Java for some time and even started teaching it to others I find it difficult to explain to new stud……

Java

2020-09-06

Java – * * copy * * and * * addall * * what’s the difference?

1) Are there any differences between these two keywords for collection elements? (copy these elements to another colle……

Java

2020-09-06

Java – Scala / lift RSS feed

I'm looking for a simple one or two lines of code to get this PHP RSS feed: I'm using Scala / lift to relate to NetBea……

Java

2020-09-06

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Java – condition check C: if always fails

Java – when to use global transactions or spring AOP for transactions

Ugly Java data structure

Java – equivalent to JFrame What is the AWT of setdefaultcloseoperation?

Java – how to sort a two-dimensional array in dictionary order?

Java – how to sort conditions using the flow API

Java – Eclipse Plug-in – notification when opening the editor in eclipse

Java：SelectionKey. Is attach () broken?

Java – why does the JUnit test method need to be void?

How to use resourcebundle to avoid hard coding configuration paths in Java applications?

How do I resolve errors about incompatible types?

Can the skip method of Java – stream make the infinite stream limited?

Java – do calls to thread safe functions also need to be synchronized?

Multithreading – * * * glibc detected * * * double free or corrupt (fasttop):

Java – is the public modifier in the private class of the package redundant?

Java – installing IBM JRE on windows (non IBM machines)

Java – how to use “jconsole” with WebSphere 6.1?

Java – use streams to map to 2D arrays

Java – how to collect logs in JBoss related to a single request?

Java – how do I use a project in another project as a module?

I can use Java util. Set implements state transition for DFA in Java

Can the Java / Scala / etc code tell Tomcat when to run it?

Java – jwindow never gets focus events

Java – how to select overloaded methods by parameter types?

Java – entity update using JPA / Hibernate

Java reduces the collection of strings to the mapping that occurs

The Java 8 stream cannot resolve variables

Java – implementation is also overridden

Java – how to make two clients chat with each other?

Java – Convert floating point arrays

Java – * * copy * * and * * addall * * what’s the difference?

Java – Scala / lift RSS feed

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