Java 归档 - Page 72 of 655

Java – sequencegenerator problem for unit testing in HSQLDB / H2

I've tried to use HSQLDB and H2 for unit testing, but I'm facing the problem of sequence generator The field declarati……

Java

2020-09-02

Java: how to make this serializable?

I need the following class to be serializable package helpers; public class XY implements Comparable<XY> { ……

Java

2020-09-02

Java – generic parameters for serializable collections

I have such members in a serializable class: private final Map<String,List<T>> categoryMap = Maps.newHashM……

Java

2020-09-02

Java – how do I get numbers? How many items have different names?

I have a list < custom > Where is custom class Custom { public int id; public String name; } How do I ge……

Java

2020-09-02

Java – spring using security: authentication principal in the link username

OK, this should be a simple one In the header In the JSP x file, I want a link to guide authenticated users to their u……

Java

2020-09-02

Java – buttons are not initially drawn

There is a problem with my applet. The buttons won't be drawn until you hover over them They stay after that, but once……

Java

2020-09-02

Java – how do I display jtextfield when I click an image?

So I'm trying to make this program that allows users to tag photos in Java (a bit like Facebook tags) I've finished lo……

Java

2020-09-02

Java – should the connectmanager really shut down?

Sometimes I get java.net.socketException: Too many open files java.net.socket.createImpl(Socket.java:397) java.net.s……

Java

2020-09-02

Java – calendar volume affects other calendars

I have a piece of code that I don't quite understand It caused a mistake There is a calendar object and a method to wr……

Java

2020-09-02

Exception in thread “main” Java lang.RuntimeException：Stub

Hey, guys, I got this strange mistake. I can't figure out why? package com.androidbook.services.httpget; import java.……

Java

2020-09-02

Java – reference to ArrayList element

I tried to get a reference to the ArrayList element, but I failed ArrayList<String> test = new ArrayList<Stri……

Java

2020-09-02

Java desktop notification Ubuntu

Ubuntu has desktop notifications at the bottom of the screen My question is how to use it in Java I can't find a solut……

Java

2020-09-02

Java – jsoup: Retrieves elements that do not contain specific attributes

I have a table with follow logic >Table display name list > for each row containing < tr class = hiderow >……

Java

2020-09-02

Java – WebLogic Server:: the server does not support version 3.0 of the J2EE Web module specification

When I try Weblogic 11g 10.3 When the 5 server runs the application, it displays "the server does not support version ……

Java

2020-09-02

What mechanism does Scala have for generics and wildcards compared to Java?

I often push the limits of the Java type system by using Guice, typeliteral, generics and wildcards I often encounter ……

Java

2020-09-02

Java – use 2 RGB colors with alpha

When I combine two colors, I'm trying to get the final color (in Java), and the color at the top has alpha transparenc……

Java

2020-09-02

Java – find unique entries in the list

List<Object> listObj = new ArrayList<Object[]>(); List<Object> listObj = new ArrayList<Object[]&g……

Java

2020-09-02

Java – the best way to thread in Android?

I have an animation that triggers an event This event will trigger a lot of computing usage, thus breaking the UI What……

Java

2020-09-02

java – Selenium WebDriver getText

I have a < div name = "mydiv" > 0 < / div > I try to write a test with 0 text in mydiv Use webdriver, whic……

Java

2020-09-02

How to replace monies in dual java with BigDecimal

I'm doing a college job. I use double money I know that double currency values are not recommended, so I want to know ……

Java

2020-09-02

Java – GWT – fancy Google style buttons?

I'm curious, is there any way to style buttons in my GWT application so that they look the same as they behave in Gmai……

Java

2020-09-02

Java – regular expressions match any integer

I have a problem that regular expressions match any int string This is what I have: if(quantityDesired.matches("\b\d+\……

Java

2020-09-02

How do I find a location to create a Java singleton instance?

In a large and complex program, it may not be easy to find its location Greetings, RR Solution A singleton usually has……

Java

2020-09-02

Java – Hello world by Jersey and Grizzly (from User Guide)

I'm looking at the Jersey user guide and trying to set up the Hello World sample using the Jersey web service and the ……

Java

2020-09-02

Java – unbounded wildcard passed to method

@H_ 301_ 7@public class ColTest { static T wildSub(ArrayList holder,T arg){ T t=holder.get(0); return t; } public s……

Java

2020-09-02

Java – global memory counter, which is thread safe and flushed to MySQL every x increments

Can I create in memory counters that all servlets will use? This global counter will track the web page views of the w……

Java

2020-09-02

Java – using enum or string as static factory methods?

Would it be better to schedule to the correct object using enum or string to create it in a static factory method? Str……

Java

2020-09-02

Is java like “properties” in c#?

See English answers > does java have "properties" that work the same way properties work in c#? 5 I searched for Ja……

Java

2020-09-02

Configuration file in Java

I created a swing application GUI, which contains textfields, labels, Check@R_780_2419 @Es and Combo@R_780_2419 @Es an……

Java

2020-09-02

Use runtime What is the reason for “the system cannot find the specified file” caused by exec? (Association / ftype)

Who knows why these two statements cause the displayed exception? Runtime.getRuntime().exec("assoc .vlan=\"file type d……

Java

2020-09-02

Java – what is this language feature called?

JPanel panel = new JPanel() { JPanel panel = new JPanel() { public void setBackground(Color c) { Lo……

Java

2020-09-02

Java – add value for double [] ArrayList

I have the following array ArrayList<double[]> db_results = new ArrayList<double[]>(); I want to add such ……

Java

2020-09-02

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Java – sequencegenerator problem for unit testing in HSQLDB / H2

Java: how to make this serializable?

Java – generic parameters for serializable collections

Java – how do I get numbers? How many items have different names?

Java – spring using security: authentication principal in the link username

Java – buttons are not initially drawn

Java – how do I display jtextfield when I click an image?

Java – should the connectmanager really shut down?

Java – calendar volume affects other calendars

Exception in thread “main” Java lang.RuntimeException：Stub

Java – reference to ArrayList element

Java desktop notification Ubuntu

Java – jsoup: Retrieves elements that do not contain specific attributes

Java – WebLogic Server:: the server does not support version 3.0 of the J2EE Web module specification

What mechanism does Scala have for generics and wildcards compared to Java?

Java – use 2 RGB colors with alpha

Java – find unique entries in the list

Java – the best way to thread in Android?

java – Selenium WebDriver getText

How to replace monies in dual java with BigDecimal

Java – GWT – fancy Google style buttons?

Java – regular expressions match any integer

How do I find a location to create a Java singleton instance?

Java – Hello world by Jersey and Grizzly (from User Guide)

Java – unbounded wildcard passed to method

Java – global memory counter, which is thread safe and flushed to MySQL every x increments

Java – using enum or string as static factory methods?

Is java like “properties” in c#?

Configuration file in Java

Use runtime What is the reason for “the system cannot find the specified file” caused by exec? (Association / ftype)

Java – what is this language feature called?

Java – add value for double [] ArrayList

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