Java 归档 - Page 557 of 655

Java – name a loop

While browsing through questions and answers on this forum, I found that a piece of code was given loops to use them f……

Java

2019-05-30

Does the java compiler optimize repeated mathematical calculations?

The java compiler optimizes simple repetitive mathematical operations, such as: if (prevX / width != curX / width) { ……

Java

2019-05-30

Java – escape in FreeMarker by default

In the FreeMarker template, we can use the escape instruction to automatically apply escape to all interpolation in th……

Java

2019-05-30

Extend a Java ArrayList

I want to extend ArrayList to add several methods for a specific class, and its examples will be saved by the extended……

Java

2019-05-30

Java – Hibernate: delete many to many associations

I have two tables associated with many to many – DB segment: Load ID name Meeting Id date sessionsloads LoadId SESSION……

Java

2019-05-30

Mp3 coding in Java

I need an opensource API in Java that can convert * WAV and * Au format is encoded as MP3 and vice versa I have evalua……

Java

2019-05-30

Java – polymorphism of member variables I know it’s impossible. I don’t understand the specific situation

I know this behavior, but I'm not 100% sure why it happened class Animal{ String name = "Animal"; public voi……

Java

2019-05-30

Java – how to extract values from JSON

I get a response string from the server, as shown below {"name":"Json","detail":{"first_name":"Json","last_name":"Scot……

Java

2019-05-30

Java – Atomic increment of long variables?

If the long variable is declared as: – Long counter = 0; Now, if I use the pre increment operator to increment it, is ……

Java

2019-05-30

Logical solution algorithm (applicable to Sudoku in Java)

I have a problem with my logic algorithm It solves the problem of a large number of hints, which is only a problem wit……

Java

2019-05-30

Java – can jmenubar be added to the decoration window of JFrame?

I want to know if I can add jmenubar to the decoration window of JFrame or jrootpane, or if I can include the border i……

Java

2019-05-30

Java – used to define the disadvantages of non static recorders

How do you reduce Java logging boilerplate code? It is strongly recommended not to use recorders as instance member va……

Java

2019-05-30

Maintain the map (Collection) of inserted orders in Java

I need to use maps for Android Application in Java But the problem is that the list is sorted automatically How to use……

Java

2019-05-30

Java – partial JSON serialization at runtime (for restful queries)

I'm trying to convert Java objects in Tomcat to JSON (currently using Jackson) Based on the fields in the restful requ……

Java

2019-05-30

Java – warn: failed to register destroy callback

This warning message appears a lot in my log For each managed bean, as long as it expires After the given time, becaus……

Java

2019-05-30

Java – convert a for loop to a concat string of a lambda expression

I have the following for loop to traverse a string list and store the first character of each word in StringBuilder I ……

Java

2019-05-30

Java – why is “multiplexing, non blocking I / O, […] more scalable than thread oriented, blocking I / O”?

I was reading the channel in the JDK 7 document (here) and came across: Is there a simple explanation why? Solution "B……

Java

2019-05-30

Java – is the root cause of log4jlogger missing or unavailable?

I have commons - logging in the classpath Jar (v1.0.4) and log4j-1.2 8. Jar and get the following runtime error: Cause……

Java

2019-05-30

Java – is the first element of an array returned using split always safe?

I'm sure the answer is yes, but I just want to make sure that no non empty string (whatever it contains) will return a……

Java

2019-05-30

Java – mockito – a method that stores the object returned by the mock object method

Suppose I have a mock object. I don't want to stub any of its methods, but I want to store a method of the returned ob……

Java

2019-05-30

Java – in Net?

I want to know what's going on here Net, but Java doesn't have much experience I think applets can be compared with Si……

Java

2019-05-30

Will an assertion error be found in the catch block of the Java exception?

Code:- try { Assert.assertEquals("1","2"); } catch (Exception e) { System.out.println("I am in error block"); ……

Java

2019-05-30

Java – what is “VM recurring task thread”?

I can see this thread in my thread dump: "VM Periodic Task Thread" prio=10 tid=0x00007fc23000e800 nid=0x49e6 waiting o……

Java

2019-05-30

Package private scope in scala visible in Java

When I used the bytecode generated by Scala code from Java code, I just found the strange behavior of scala scope Cons……

Java

2019-05-30

Extend a Java ArrayList

I want to extend ArrayList to add several methods for a specific class, and its examples will be saved by the extended……

Java

2019-05-30

Vector creation and VEC! Macros contain different capacities

I have a vectormatrix_ a. It contains three vectors and is initialized with VEC! Macro Because VEC:: with_ Capacity (D……

Java

2019-05-30

Java EE – multiple response HTTP states in spring MVC

With the following codes: @RequestMapping(value = "/system/login",method = RequestMethod.GET) public void login(@Requ……

Java

2019-05-30

Example of finding text content replacement function in Java

Idea: First look at the view layer. There should be a JButton control to select the file, a jtextfield control to disp……

Java

2019-05-29

Method of reading spring configuration file (spring reads resource file)

1. Spring configuration file

Java

2019-05-29

Conversion between Java and JSON objects

1. JSON lib is a Java class library, which provides the function of converting Java objects, including beans, maps, co……

Java

2019-05-29

Java uses POI to read ppt files and poi to read excel and word examples

Apache's POI project can be used to process MS office documents, and there is another one on codeplex Net version. POI……

Java

2019-05-29

Use example of JSON parsing class library of Java

Open source project home page: https://github.com/dongfangshangren/Zson

Java

2019-05-29

搜索内容

Java – name a loop

Does the java compiler optimize repeated mathematical calculations?

Java – escape in FreeMarker by default

Extend a Java ArrayList

Java – Hibernate: delete many to many associations

Mp3 coding in Java

Java – polymorphism of member variables I know it’s impossible. I don’t understand the specific situation

Java – how to extract values from JSON

Java – Atomic increment of long variables?

Logical solution algorithm (applicable to Sudoku in Java)

Java – can jmenubar be added to the decoration window of JFrame?

Java – used to define the disadvantages of non static recorders

Maintain the map (Collection) of inserted orders in Java

Java – partial JSON serialization at runtime (for restful queries)

Java – warn: failed to register destroy callback

Java – convert a for loop to a concat string of a lambda expression

Java – why is “multiplexing, non blocking I / O, […] more scalable than thread oriented, blocking I / O”?

Java – is the root cause of log4jlogger missing or unavailable?

Java – is the first element of an array returned using split always safe?

Java – mockito – a method that stores the object returned by the mock object method

Java – in Net?

Will an assertion error be found in the catch block of the Java exception?

Java – what is “VM recurring task thread”?

Package private scope in scala visible in Java

Extend a Java ArrayList

Vector creation and VEC! Macros contain different capacities

Java EE – multiple response HTTP states in spring MVC

Example of finding text content replacement function in Java

Method of reading spring configuration file (spring reads resource file)

Conversion between Java and JSON objects

Java uses POI to read ppt files and poi to read excel and word examples

Use example of JSON parsing class library of Java

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