Java 归档 - Page 317 of 655

Java – how to print two positions correctly using the zero padding flag in a print statement

What if you want to print with zero pad int month,day; public void printNumeric() { System.out.printf("month +"/" ……

Java

2020-02-13

java – Object. What is this farm by farm copy done by clone()?

In effective Java, the author points out that: What I want to know is his meaning of copying scene by scene Does this ……

Java

2020-02-13

Java – spring @ transactional annotation cannot use automatic wiring?

My application uses spring auto wiring to configure beans I just tried to add @ transactional, and it seems that I did……

Java

2020-02-13

Java – unable to parse org. XML eclipse. jdt. annotation. Nonnull type It is from what is needed Class file indirectly referenced

When I use the Java 8 method to reference the double colon operator (:) and the new operator (for example, mytype:: ne……

Java

2020-02-13

Extracting human voice from wav file using java

I'm working on a project where I have to use Java from audio Extract human voice from wav file Audio WAV files may hav……

Java

2020-02-13

Java – NullPointerException in iabhelper In querypurchases

Today, I found an application crash report for Android applications involving the following stack traces: java.lang.Nu……

Java

2020-02-13

Java – how do I create daemon threads?

Can Java programmers manually create daemon threads? how? Solution java. lang.Thread. setDaemon(boolean) Note that if ……

Java

2020-02-13

Create a stand-alone Java websocket client endpoint?

I want to create a websocket endpoint client in Java (as pure as possible, no framework), but almost all the examples ……

Java

2020-02-13

Java – when I read an image, the source raster array and the source color space component do not match

See English answers > illegalargumentexception: numbers of source raster bands and source color space components do……

Java

2020-02-13

Why does the nullprintstream() function in Java / Lang / system compare currenttimemillis() to zero?

When loading the system class, the < clinit > method instantiates the in, out and err printstream variables with……

Java

2020-02-13

Java – the best way to find the date closest to the target in the date list?

I have a list of date objects and a target date I want to find the date closest to the target date in the list, but on……

Java

2020-02-13

Java – in Null pointer exception on setonclicklistener

I have a problem clicking the login mode submit button of the listener This is a mistake Caused by: java.lang.NullPoin……

Java

2020-02-13

Do characters have intrinsic int values in Java?

Why does this code print 97? I haven't assigned 97 to 'a' anywhere else in my code before public static void permutati……

Java

2020-02-13

How to limit the number of entries in a Java hash table?

Is there a technique so that I can specify a number n so that when inserting the (N1) th entry, the oldest entry is de……

Java

2020-02-13

Java EE enterprise applications: some actions for deployment / startup

See English answer > using special auto start servlet to initialize on startup and share application data1 thank yo……

Java

2020-02-13

Java – how to get the ID of automatic increment when I insert a record in the table through JDBC template

private void insertIntoMyTable (Myclass m) { private void insertIntoMyTable (Myclass m) { String query = "INSERT I……

Java

2020-02-13

Java – why not create a JDBC connection pool?

I'm developing a simple Java EE application with ear files containing jar and war files In the ear project under earco……

Java

2020-02-13

Java – how does Lombok generate code to an existing class?

I can use annotation processor to generate classes from scratch, but I can't modify Lombok - like classes I searched t……

Java

2020-02-13

Java – association between: webapplicationcontext of springioccontainer | ApplicationContext |

background After reading 1 2 3 4 5 6 links, I come to the following conclusions – As spring, MVC is designed in a stan……

Java

2020-02-13

Java – there is a “global” Ctrl (skip to error) shortcut in eclipse?

Ctrl. Brought me an error in the file But if my error view gives me more errors, is there a shortcut to open the next ……

Java

2020-02-13

How to find the maximum value of a given element in a HashMap using java 8 streams

I have a product HashMap Every product has a price I know how to find the product with the highest price But using jav……

Java

2020-02-13

Java – how to merge wars into one?

In our company, we have several different modules built as separate wars Can I automate this process? For example, it ……

Java

2020-02-13

Java – Maven exec plug-in classnotfoundexception

I am using the Maven exec plug-in to run a Java application from the command line. The command is MVN exec: Java I'm a……

Java

2020-02-13

Java – why call close() on resultset and connection instances?

When I no longer need to use instances of resultset and connection in my program, why call on these two methods What a……

Java

2020-02-13

Bring JPanel in front of other objects (swing) in Java

I want to load when the app process is running, so I use JPanel on JTree But when the user clicks JPanel, JTree will s……

Java

2020-02-13

Java – use okhttp to get HTTP status code

I'm using okhttp to get some website content However, I can't get the HTTP status code from the response My java code:……

Java

2020-02-13

Java – how to get the selected row index in JSF datatable?

I'm at index There is a database on XHTML <h:dataTable style="border: solid 2px black;" value="#{IndexBean.book……

Java

2020-02-13

Fast port forwarding in Java

I built a simple application to open the server socket. When connecting, it connects itself to another server socket o……

Java

2020-02-13

Java – parsing JSON objects and JSON arrays using gson

I have a JSON that is a single object or an array of the same object Is there any way to parse this data using gson, w……

Java

2020-02-13

Java – Convert byte [] to ArrayList

I have a byte [], which I get using object ArrayList Can someone tell me how to convert my byte [] to object ArrayList……

Java

2020-02-13

Java – how to attach to AES encrypted files

I'm writing some recorders that generate encrypted log files Unfortunately, cryptography is not my strong point Now I ……

Java

2020-02-13

Compiling java files programmatically

I know this has been asked a lot, but I still don't have a good solution. I still don't understand some parts So I nee……

Java

2020-02-13

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Java – how to print two positions correctly using the zero padding flag in a print statement

java – Object. What is this farm by farm copy done by clone()?

Java – spring @ transactional annotation cannot use automatic wiring?

Java – unable to parse org. XML eclipse. jdt. annotation. Nonnull type It is from what is needed Class file indirectly referenced

Extracting human voice from wav file using java

Java – NullPointerException in iabhelper In querypurchases

Java – how do I create daemon threads?

Create a stand-alone Java websocket client endpoint?

Java – when I read an image, the source raster array and the source color space component do not match

Why does the nullprintstream() function in Java / Lang / system compare currenttimemillis() to zero?

Java – the best way to find the date closest to the target in the date list?

Java – in Null pointer exception on setonclicklistener

Do characters have intrinsic int values in Java?

How to limit the number of entries in a Java hash table?

Java EE enterprise applications: some actions for deployment / startup

Java – how to get the ID of automatic increment when I insert a record in the table through JDBC template

Java – why not create a JDBC connection pool?

Java – how does Lombok generate code to an existing class?

Java – association between: webapplicationcontext of springioccontainer | ApplicationContext |

Java – there is a “global” Ctrl (skip to error) shortcut in eclipse?

How to find the maximum value of a given element in a HashMap using java 8 streams

Java – how to merge wars into one?

Java – Maven exec plug-in classnotfoundexception

Java – why call close() on resultset and connection instances?

Bring JPanel in front of other objects (swing) in Java

Java – use okhttp to get HTTP status code

Java – how to get the selected row index in JSF datatable?

Fast port forwarding in Java

Java – parsing JSON objects and JSON arrays using gson

Java – Convert byte [] to ArrayList

Java – how to attach to AES encrypted files

Compiling java files programmatically

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