Java 归档 - Page 75 of 655

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

Java – why don’t I own this class when it should be in rt.jar?

So, I'm trying to implement LDAP connection in Java... This requires com sun. jndi. ldap. LdapCtxFactory. Jarfinder sh……

Java

2020-09-02

Java me – DateField of lwuit?

I wonder if lwuit has any DateField / datepicker components? Or, will there be any workaround for the implementation d……

Java

2020-09-02

Java – cellrenderer and editor reset when new columns are added

I have a table where my columns expand dynamically Initially, I set my table model to 5 columns because the basic info……

Java

2020-09-02

Java – sockettimeoutexception: read timeout. How to solve it?

I have a swing application that reads HTML pages using the following command String urlzip = null; try { Docum……

Java

2020-09-02

Add a new string to HashMap Java

I'm writing a program to read the log file and count the number of times some strings are displayed I tried to manuall……

Java

2020-08-31

Java selection: store images in jar or Base64 order?

I wrote a poker simulator / odds calculator On the GUI, there are some JCombo@R_271_2419 @The user can select the card……

Java

2020-08-31

java. sql. Sqlexception: ora-06550: after calling the procedure from Java code

Hi, I have a problem calling stored procedures connection = ConnectionManager.getInstance().getConnection(dataBaseURL,……

Java

2020-08-31

Java – the fastest way to combine unique integers from 2 arrays

If I have 2 arrays: arr1 = {9,8} arr2 = {13,12,10,9,8} I want to get: {13,10} And the array is given: arr1 = {23,22,21……

Java

2020-08-31

Java – Android simpledateformat does not work

Quick questions, simpledateformat didn't perform as well as I expected I want to get a date string that looks like Thu……

Java

2020-08-31

Java – start Tomcat war

I installed Tomcat server on my computer I created a set of servlets in eclipse and exported them in war format When I……

Java

2020-08-31

The best way to wait in Java

I have an application that needs to wait for some time It must wait until the server fills in several data fields The ……

Java

2020-08-31

Java – the concept of page path in JSP and Servlet

What's the difference between the two? In jsp: ${pageContext.request.contextPath} How do you achieve the same result w……

Java

2020-08-31

Java – truth table array

I always insist on how to start coding The first case will be: t T. after I have completed other calculations on this ……

Java

2020-08-31

Upgrade from Java 1.4 to Java 6 se

I am currently upgrading from Java 1.4 to Java 6 se Some methods and classes have been deprecated or there have been n……

Java

2020-08-31

Java – how to make my program run outside eclipse

I have a solar eclipse project When I click the green circle play button in the IDE, it will do everything I want it t……

Java

2020-08-31

Java – BigDecimal and BigInteger and BigDecimal performance

I'm discussing whether to use BigDecimal and BigInteger or just BigDecimal to make my life easier and less back and fo……

Java

2020-08-31

Java – spring data: JPA schema jparepositoryconfigdefinitionparser initialization failed

I'm trying to set up a project about spring data, but I encountered a strange error like this: Handle problems with pr……

Java

2020-08-31

Java – why call JFrame Will pack () add extra space?

At first, the code I used worked well, but it was a little confusing After moving some parts of the method to the cons……

Java

2020-08-31

Java – Python module for handling software versions

I am looking for a python module / library that will run on the 'software version'... Which means, for example: >Co……

Java

2020-08-31

Java – use select where where Mysql to be case sensitive in MySQL

Hi, I'm using java front end and MySQL backend, Actually in TBL_ Test contains name value --------------- abc 22 ……

Java

2020-08-31

The best sorting algorithm of Java – burrows Wheeler transformation (BWT)

Burrows Wheeler transformation got me into some problems This is a university project, but it is only a small part of ……

Java

2020-08-31

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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

Java – why don’t I own this class when it should be in rt.jar?

Java me – DateField of lwuit?

Java – cellrenderer and editor reset when new columns are added

Java – sockettimeoutexception: read timeout. How to solve it?

Add a new string to HashMap Java

Java selection: store images in jar or Base64 order?

java. sql. Sqlexception: ora-06550: after calling the procedure from Java code

Java – the fastest way to combine unique integers from 2 arrays

Java – Android simpledateformat does not work

Java – start Tomcat war

The best way to wait in Java

Java – the concept of page path in JSP and Servlet

Java – truth table array

Upgrade from Java 1.4 to Java 6 se

Java – how to make my program run outside eclipse

Java – BigDecimal and BigInteger and BigDecimal performance

Java – spring data: JPA schema jparepositoryconfigdefinitionparser initialization failed

Java – why call JFrame Will pack () add extra space?

Java – Python module for handling software versions

Java – use select where where Mysql to be case sensitive in MySQL

The best sorting algorithm of Java – burrows Wheeler transformation (BWT)

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