Java 归档 - Page 74 of 655

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

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

Java Swing multithreading and UI freezing

I can't think of this Using worker or invoker, the UI will still freeze After downloading each file, I want to update ……

Java

2020-09-02

Java – jtextarea contains only numbers, but negative values are allowed

I have a jtextarea, just accept numbers This is my code: DocumentFilter onlyNumberFilter = new AxisJTextFilter(); ……

Java

2020-09-02

How to create a class by name defined in the type field of a generic class

I want to use Java generics to implement such functions: public class Test<T> { public T data; public t……

Java

2020-09-02

Java – when should I use multiple instances of Solr?

I need to index three completely unrelated elements (such as product, blog post, location) Solution If you have three ……

Java

2020-09-02

Java – gets the case sensitive name of the file, not case sensitive spelling

I am creating an application from which users can select files: FilePicker. Pickfile (file name) Where filename is a s……

Java

2020-09-02

Java – how to get the line number in the @ init action of antlr3 tree parser

In ANTLR version 3, how to obtain the line number in the @ init operation of the advanced tree parser rule? For exampl……

Java

2020-09-02

Java – M2e still provides the error that “plug-in execution is not overridden by lifecycle configuration”, even if explicit binding is used in custom plug-ins

I'm building a plug - in for code generation I have followed the steps here to learn how to create a plug-in: http://m……

Java

2020-09-02

How to develop producer consumer like applications in Java?

I have to develop an application similar to the producer - consumer problem in Java But I don't know much about Java. ……

Java

2020-09-02

Java – create variables in advance to use (?) in the loop

Which of the two is more "effective": for (int i = 0; i < 10; i++) { int x = i * 2; } Or – int x; for (int i = ……

Java

2020-09-02

How to determine the number of fields set on an object in Java

I'm not sure if I can do this, but I say I have this object: public class SomeObject { private String field1; ……

Java

2020-09-02

java – Android; Declare EditText in the class body (in any method)

I have programming language experience, but I'm a little new to Android programming I have a program that contains fie……

Java

2020-09-02

java – play framework Exception – field .. No default value

Running my play framework applet, I get the following exception: Error play spit out in browser I have 2 physical mail……

Java

2020-09-02

Java – stop all AWT / swing threads and monitors and things so that only the main thread is left

I have the following public static void main(String[] args) { boolean running = true; boolean foo= false; ……

Java

2020-09-02

Is java – atomicinteger implemented based on JNI?

Soneone told me that atomicinteger is implemented using JNI, so it is much faster than synchronization It's true? Solu……

Java

2020-09-02

Lucene in Java, C # Net and C. which is the best version for long-term use on Windows Servers?

I will implement Lucene search into my project. I want to make the best start 1、 Performance 2 Easy to implement 3 Ma……

Java

2020-09-02

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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

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?

Java Swing multithreading and UI freezing

Java – jtextarea contains only numbers, but negative values are allowed

How to create a class by name defined in the type field of a generic class

Java – when should I use multiple instances of Solr?

Java – gets the case sensitive name of the file, not case sensitive spelling

Java – how to get the line number in the @ init action of antlr3 tree parser

Java – M2e still provides the error that “plug-in execution is not overridden by lifecycle configuration”, even if explicit binding is used in custom plug-ins

How to develop producer consumer like applications in Java?

Java – create variables in advance to use (?) in the loop

How to determine the number of fields set on an object in Java

java – Android; Declare EditText in the class body (in any method)

java – play framework Exception – field .. No default value

Java – stop all AWT / swing threads and monitors and things so that only the main thread is left

Is java – atomicinteger implemented based on JNI?

Lucene in Java, C # Net and C. which is the best version for long-term use on Windows Servers?

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