Java 归档 - Page 75 of 655

Java – although the type is the same, I get the ClassCastException event Why?

I'm not very new to Java, although I've never really used sets before, I have the following questions; But first, this……

Java

2020-09-02

Java – how do I deny site access from iframe?

I noticed that some websites refused to access their registration and login pages from iframes for security reasons In……

Java

2020-09-02

Java – how to encode a string to replace all special characters

I have a string containing special characters But I have to convert a string to a string without any special character……

Java

2020-09-02

Java – executorservice restart

Can I restart executorservice to start accepting new tasks after shutdown? Or must I always create a new executorservi……

Java

2020-09-02

Java – is it a good habit to use HashMap to index object lists?

I need to find objects through properties One option is to iterate over the array of objects and check each object who……

Java

2020-09-02

Java – p.waitfor() wait forever

I tried to run the command using a java program, but the p.waitfor() function never waited What's wrong with the code?……

Java

2020-09-02

Java – find words that contain only the given characters: regex

I have a set of words For example, abc,adb,acb,cab,abcc,abk,bacc If I want to find only So, what I need is abc,bacc I ……

Java

2020-09-02

Fragments or no fragments? GAE / JAVA / JDO

I am currently porting some work from Mysql to Google App Engine / Java I am using JDO and the required low-level Java……

Java

2020-09-02

Model view controller – uses multiple interfaces with MVC dataannotations and metadatatype

I am using data annotations to apply validation to MVC ViewModel, which is a combination of several Entity Framework o……

Java

2020-09-02

Java – JPanel freezes my entire application when trying to draw

I'm writing the school project of Oregon Trail, and I'm implementing the hunting mini game We are using a model view d……

Java

2020-09-02

How to read large files in Java as blocks without being blocked?

Suppose you have a larger file and you have memory to process it You want to read n-byte files in turn and will not be……

Java

2020-09-02

Java – how to distinguish whether two IPS belong to the same computer?

We have client main programs and agents (both) on different computers The network configuration can be any type (we do……

Java

2020-09-02

Java – how to get “real” exceptions in JUnit instead of ejbexceptions when using ejbcontainer?

I am setting up unit tests in my Java EE application I am using JPA, JSF, NetBeans and GlassFish It is also my first r……

Java

2020-09-02

Java – JTable line color depends on the value in the model?

I have this code in the table model: public class DocumentProjectTableModel extends AbstractTableModel{ private L……

Java

2020-09-02

Java – Rewriting interface methods

For interfaces such as public interface something<T> { public something<T> somemethod(); } From my unde……

Java

2020-09-02

Java – how do I implement boxing and unpacking in my own classes?

There is no operator override like I C in Java, so I can't figure out how to box / unpack my own class For example, wh……

Java

2020-08-31

How to confirm a message in message driven beans

In the JMS document, I read that message driven beans do not support client_ Acknowledge mode, only supports dups_ OK_……

Java

2020-08-31

Java – definition of jax-ws and jax-rs [closed]

I read somewhere on the Internet that Jax - WS is a soap implementation and Jax - RS is a rest implementation It's tru……

Java

2020-08-31

Java – is there a better algorithm than the one I gave in the TripAdvisor interview?

Just received a telephone interview from TripAdvisor (no reduction) I got the following code and asked to implement fi……

Java

2020-08-31

Best practices for checking duplicate values in a database using java

I use @ column to set the unique constraint of the user name (unique = true) >By capturing the exception that the p……

Java

2020-08-31

Persistent blocking queue in Java?

TL; DR; I need to know if there is a lib with persistent blocking queues, which is a performance I have a classic prod……

Java

2020-08-31

What is the best cycle diagram representation for Java GC

Or I might ask if the New GC is important? If so, do you need to manage links between nodes through lookup tables or u……

Java

2020-08-31

How do I replace {a string inside Java

Anyone can help me replace 'in the string in Java{‘ For example String str = "abc{ad}"; str = str.replace("{","("); Bu……

Java

2020-08-31

Java – find the median in the B-tree

I need to implement a B - tree I need to create the following methods: >Insert (x) – 0 (log_t (x)). > Search – s……

Java

2020-08-31

Java – refresh JTable when setautocreaterowsorter is true

I wrote a default table as follows: public class CustTableRenderer extends DefaultTableCellRenderer{ @Override ……

Java

2020-08-31

Java – XML unmarshalling using JAXB with namespace and schema

I have an XML document as follows: <?xml version="1.0" encoding="UTF-8"?> <xs:msgdata xmlns:xs="http://www.my……

Java

2020-08-31

Java listen button and keyboard click

How to press the key and trigger JButton? For example: I use "a" JButton as the GUI on the panel I implemented a butto……

Java

2020-08-31

Java – convert audio stereo to audio bytes

I'm trying to do some audio processing. I'm really stuck in stereo to mono conversion I checked the stereo to mono con……

Java

2020-08-31

Java – what does it mean when someone says “the result is not thread safe”

When I read this document, I was writing an application specific Java HBase API wrapper: http://hbase.apache.org/apido……

Java

2020-08-31

Java – JPA subclasses referenced by multiple different parent classes

I encountered the following ORM problems: I have two grades A and B, and they all have a group of grades C: class A { ……

Java

2020-08-31

Java – add graphics to JFrame using borderlayout

I'm trying to do a simple job where I display a line of text to show whether the door object is open Below it, I visua……

Java

2020-08-31

Object size in Java

Suppose I have: Class A{ int a; } A obj = new A(); Then what is the size of obj? Is it the same size as int, just ……

Java

2020-08-31

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Java – although the type is the same, I get the ClassCastException event Why?

Java – how do I deny site access from iframe?

Java – how to encode a string to replace all special characters

Java – executorservice restart

Java – is it a good habit to use HashMap to index object lists?

Java – p.waitfor() wait forever

Java – find words that contain only the given characters: regex

Fragments or no fragments? GAE / JAVA / JDO

Model view controller – uses multiple interfaces with MVC dataannotations and metadatatype

Java – JPanel freezes my entire application when trying to draw

How to read large files in Java as blocks without being blocked?

Java – how to distinguish whether two IPS belong to the same computer?

Java – how to get “real” exceptions in JUnit instead of ejbexceptions when using ejbcontainer?

Java – JTable line color depends on the value in the model?

Java – Rewriting interface methods

Java – how do I implement boxing and unpacking in my own classes?

How to confirm a message in message driven beans

Java – definition of jax-ws and jax-rs [closed]

Java – is there a better algorithm than the one I gave in the TripAdvisor interview?

Best practices for checking duplicate values in a database using java

Persistent blocking queue in Java?

What is the best cycle diagram representation for Java GC

How do I replace {a string inside Java

Java – find the median in the B-tree

Java – refresh JTable when setautocreaterowsorter is true

Java – XML unmarshalling using JAXB with namespace and schema

Java listen button and keyboard click

Java – convert audio stereo to audio bytes

Java – what does it mean when someone says “the result is not thread safe”

Java – JPA subclasses referenced by multiple different parent classes

Java – add graphics to JFrame using borderlayout

Object size in Java

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