Java 归档 - Page 318 of 655

AspectJ: intercept method from external jar

I am using x.jar and adding it to my AspectJ project (in eclipse) I have written a pointcut and suggestion for the met……

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

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 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 – 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

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 – 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 – spring security MVC: same @ requestmapping, different @ secured

Suppose we have an API endpoint configured using spring MVC and spring security We want to be able to handle @ request……

Java

2020-02-13

Java – hibernate spatial index annotation

I use JTS geometry objects to store my geometry objects as Oracle SDO_ Geometry. However, when I want to use SDO_ GEOM……

Java

2020-02-13

Java – how multithreading destroys the internal structure of HashMap

In Java 8, the really impatient Horstmann wrote: I can understand that unsynchronized concurrent access may destroy my……

Java

2020-02-13

Hash algorithm implemented by hash table

I am looking for high speed hash functions with good (i.e. near uniform) distribution for hash implementation Hash tab……

Java

2020-02-13

In the latest JDK7, using java failed hostname failed

I have got the host name of the machine as follows: InetAddress.getLocalHost().getHostName(); However, when I install ……

Java

2020-02-13

How to quickly annotate a few lines of code in Java?

I want to test the runtime of some code blocks as follows: start = System.currentTimeMillis(); { ... this.dosome……

Java

2020-02-13

. Net garbage collector

I've read a detailed article on the internal work of various garbage collectors in the JVM, but I'm finding it Net run……

Java

2020-02-13

Java – decomposes int values into different numbers

I want to divide my int value into numbers For example, if not It's 542. The result should be 5,4,2 I have two options……

Java

2020-02-13

How to write optimistic and pessimistic locking code from Java code

I know what optimistic and pessimistic locking are, but how do you do it when you write java code? Suppose I use Oracl……

Java

2020-02-13

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 – 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 – 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 – 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

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 – 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 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

Java – use getspectrum() in libgdx Library

I know the first thing you do is "look in the document". The problem is that the document is not clear I use the libra……

Java

2020-02-13

SBT scaladoc configuration

I'm trying to configure scaladoc in SBT, especially the title, output directory and classpath I managed to pass in bui……

Java

2020-02-13