包含标签：Java 的文章
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Java 8: intstream to integer []
I'm writing a simple program that will eventually plot the runtime of various sorting algorithms written in Java The g…… -
Java – simple if statement and normal if statement
At the Java bytecode level, is there any difference between a simple if statement (example 1) and a normal if statemen…… -
JavaFX – disable row selection in tableview
I have a read-only tableview in JavaFX 8. I don't want the user to select rows Solution After a while, I found out how…… -
Java – replace decimals 1 to 10 with names (“one”, “two”.)
I try to take a string and then return a string of numbers 1 to 10 and replace it with the words of these numbers For …… -
Java – sum of elements in the array
I'm doing a simple task for a summer java course. I just hope you can look at my code and see if the way I do it is th…… -
Java – Weblogic increases memory
How to increase the memory used by Weblogic (Java) When starting the server from eclipse, it displays a message, that …… -
Java – how do I save a file from a Jersey response?
I tried to download swf files from web resources using Jersey I wrote the following code, but I couldn't save the file…… -
Java – why can’t I add the first header to getpreferencescreen?
The standard setting activity from Google Android studio now displays the first title "general" So I modified the code…… -
Java – how to use reflection to tell a method to have a varargs parameter?
This is a sample code package org.example; import java.lang.reflect.Method; class TestRef { public void tes…… -
How to detect the submit button clicked in multiple submit button scenarios in a single action class?
I have a form in JSP There are two submit buttons: search and add new <s:form name="searchForm" action="employeeAct…… -
java. net. Socketexception: network unreachable connection
I tried to download an XML text file from a web server using this method: static void download (String url,String file…… -
Verify java version compatibility
I have a jar file compiled with JDK 1.7. I want to check whether the Java runtime environment of my jar is 1.7 or upda…… -
Used to represent a number as string, integer All possible characters of Java
In integer In Java, there are the following codes: /** * All possible chars for representing a number as a String */…… -
Java – SSL configuration in Tomcat and APR
I encountered a problem setting my Tomcat using APR native lib, Tomcat: 7.0.42 Java: 1.7.0_40-b43 OS: Centos 6.4 (2.6.…… -
Java – number of elements in ArrayList
How much data can a list can hold at the maximum? 8 Solution ArrayList cannot hold more than integer MAX_ Value is an …… -
Java – NullPointerException reflected when robolectric starts – any hint?
I'm developing an Android project on eclipse and I'm trying to switch from running tests on the simulator / device (ve…… -
Java – why can variables be declared without an initial value?
I'm reading Gilles Dowek's programming principles: He said that it is also possible to declare a variable without givi…… -
ORM – doctrine problem: unable to get the last insert identifier
When I try to save data to my model, doctrine throws this exception: Message: Couldn't get last insert identifier. My …… -
Java – WebSockets 403 Forbidden on HTTPS
I am currently trying to set up HTTPS in the spring boot 1.2 application This application uses a large number of WebSo…… -
Java – NetBeans cannot install some modules
I am using NetBeans 7.4 development version 2, all software packages First, I used NetBeans 7.2, all packages Then I w…… -
Java – why is it faster to iterate buckets in linked HashMap than HashMap?
It's hard for me to understand that Google search, I found and If this is the case, why does the only HashMap have to …… -
Indexof() has a strange Java. String with a duplicate string util. List behavior
I've just encountered some strange behavior. I don't expect from ArrayList < string > in Java Of course, this is…… -
Java – Solr filter cache (fastlrucache) occupies too much memory and leads to insufficient memory?
I have a Solr setting One master server and two slave servers are used for replication We have about 70 million docume…… -
Java – the transient final field used as a lock is null
The following code throws a NullPointerException import java.io.*; public class NullFinalTest { public static voi…… -
Is there something similar to the spring @ transactional annotation available in Java EE 6?
In my company, I do not encourage the use of spring framework, but promote Java EE 6 But recently I read about the spr…… -
Best practices for Java exception handling
I recently wrote the following code; It uses a lot of exception handling I think it makes the code look very difficult…… -
Java – cannot set the request character encoding to UTF-8 from the context
See English answers > Unicode input retrieved via primefaces input components become corrupt 1 <?xml version='1.…… -
Java – why doesn’t my operation work when I use BigDecimal?
I'm trying to operate with BigDecimal, but it always returns 0 Why does double work when I use it? public static void …… -
Java – the target fragment declared by the fragment does not belong to this fragmentmanager
I did an activity a, in which there is a fragment X. through fragment x, edit and click the text item on the event. I …… -
Java – Kerberos for thrift?
I have a simple java application based on thrift This is very simple, just using thrift's "Hello world" message transm…… -
Java – psqlexception: error: syntax error at or near
I think JPA is a direct relationship It looks like this CompanyGroup： @Entity @Table public class CompanyGroup implem…… -
Java – how to print SOAP message content when using Apache axis
I am using Apache axis for web service automation I am preparing the soap request through axis and further accessing t……