Java 归档 - Page 302 of 655

Unit testing – unit testing is worth the effort, in a large and old (5yr) code base?

I just joined a team that has been working in the main mode for the past five years (Java, Maven based projects) There……

Java

2020-02-22

When adding another object, Java util. ConcurrentModificationException

I am experiencing this exception What's wrong with my code? public class GlennTestMain { static ArrayList<Pers……

Java

2020-02-22

Java – why do you return false and true?

public class Test { public class Test { public static final Double DEFAULT_DOUBLE = 12.0; public static final ……

Java

2020-02-22

Java – can spring MVC with JPA be used to update a subset of attributes on an entity?

I am using spring Roo, spring MVC and JPA to save MySQL database I'm new to spring MVC and Java, but I work with cake,……

Java

2020-02-22

How to use Java math Commons curvefitter?

How do I fit a function to a set of data using math Commons curvefitter? I was told to use curvefitter with Levenberg ……

Java

2020-02-22

Java – stream lists are grouped

I'm looking for refactoring how to use streams in some of my code The first example is my current practice The second ……

Java

2020-02-22

Java – performance of log4j

I am developing a web application. I want to record some information to help me improve and observe the application (I……

Java

2020-02-22

java – IllegalArgumentException readExceptionFromParcel

I got this error from one of my users. I don't know how to solve it java. Lang.illegalargumentexception exception data……

Java

2020-02-22

Multithreading – what is saved in context switching?

Precisely saves and restores content in context switching between two threads >In the same process > between two……

Java

2020-02-22

Comment – @ singleton in Java EJB

I have an EJB that needs to be single and stateful because it will become a connection pool My question is: >If I d……

Java

2020-02-22

Java – the easiest way to index a collection’s attributes, which are themselves a collection

I have a list < foo > and want a guava Multimap < string, foo > we divide each tag of their collection <……

Java

2020-02-22

Java me – how to create a browser window in J2ME?

How to create a browser component in J2ME that can display web pages in applications? Is there an API available? Or is……

Java

2020-02-22

How to separate lists by using conditions of Java 8 streams

Consider the following codes: List<Integer> odd = new ArrayList<Integer>(); List<Integer> even = nu……

Java

2020-02-22

Java – insert the row and get the generated ID

I am trying to use spring's jdbctemplate class to insert a row into the MySQL table named transaction and get the gene……

Java

2020-02-22

Java – why does filesystemxmlapplicationcontext throw FileNotFoundException on existing files

resolvent

Java

2020-02-22

Why use negative int in toString method of integer class in Java SRC for mod operation

When I read the Java version of 1.7 0_ 09 source code, I found that the implementation of toString method of integer c……

Java

2020-02-22

Java – function method of thread safe shared counter

I am new to scala and functional programming. I like the idea of using immutable objects. I can avoid many thread safe……

Java

2020-02-22

Multithreading – can static arrays be safely accessed from multiple threads?

If each thread guarantees to read / write a specific subset of the array, multiple threads can work on the same (stati……

Java

2020-02-22

Does Java also test the equality of handling null values?

Is there anywhere in the Java standard library with static equality functions? public static <T> boolean equals(……

Java

2020-02-22

Java – spring boot: how to reference application. In @ importresource properties

My spring boot application has an ApplicationContext XML file In this file, it has an attribute placeholder – ${profil……

Java

2020-02-22

Java – ecobertura does not work properly in eclipse

So I tried to test the coverage of Java applications in eclipse I installed ecobertura from the "install new software"……

Java

2020-02-22

Java API interrupt

I have the following APIs: public interface MyApi { /** * Performs some stuff. * @throws MyException if co……

Java

2020-02-22

A problem about Java multithreading

Assume the following courses public class TestObject{ public void synchronized method1(){ //some 1000 line……

Java

2020-02-22

Java – when there is more data, the Jasper report exports empty data in PDF format

I have a report exported in Excel, PDF and word using Jasper report I use the XML file as the data source of the repor……

Java

2020-02-22

Java – how do I enable Maven profiles when the build version is not – snapshot?

I'm trying to use the gitflow helper Maven plugin extension for my Maven build Therefore, I want to configure my proje……

Java

2020-02-22

java – ASN. 1 encoding – decoding

I am currently developing a client server program, a client in Java / C and a server in C In this case, I realized the……

Java

2020-02-22

The best way to print simple reports in Java

I have developed a Java application, and now I want to provide some simple printing support Print invoices, reports, e……

Java

2020-02-22

Multithreading – reentry locking: advantages and disadvantages?

Under what circumstances do people want to use turn back locks and ordinary locks? Solution I think reentrant locks ha……

Java

2020-02-22

Variable fields of objects in Java collections

I correctly assume that if you have a field contained in the Java collection & (or as a key in the map about the t……

Java

2020-02-22

Execute diff in Java

I am looking for diff implementation in Java I see Python has its own sequencematcher (with difflib), which is exactly……

Java

2020-02-22

Java – spring application startup error: source cannot be empty

I'm following the spring tutorial and the following error occurred when I tried to start the spring application: What ……

Java

2020-02-22

Java – manage JAXB generated classes in the Maven project

I have a maven based project in which I try to add some JAXB classes automatically generated by the "jaxb2 Maven plugi……

Java

2020-02-22

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Unit testing – unit testing is worth the effort, in a large and old (5yr) code base?

When adding another object, Java util. ConcurrentModificationException

Java – why do you return false and true?

Java – can spring MVC with JPA be used to update a subset of attributes on an entity?

How to use Java math Commons curvefitter?

Java – stream lists are grouped

Java – performance of log4j

java – IllegalArgumentException readExceptionFromParcel

Multithreading – what is saved in context switching?

Comment – @ singleton in Java EJB

Java – the easiest way to index a collection’s attributes, which are themselves a collection

Java me – how to create a browser window in J2ME?

How to separate lists by using conditions of Java 8 streams

Java – insert the row and get the generated ID

Java – why does filesystemxmlapplicationcontext throw FileNotFoundException on existing files

Why use negative int in toString method of integer class in Java SRC for mod operation

Java – function method of thread safe shared counter

Multithreading – can static arrays be safely accessed from multiple threads?

Does Java also test the equality of handling null values?

Java – spring boot: how to reference application. In @ importresource properties

Java – ecobertura does not work properly in eclipse

Java API interrupt

A problem about Java multithreading

Java – when there is more data, the Jasper report exports empty data in PDF format

Java – how do I enable Maven profiles when the build version is not – snapshot?

java – ASN. 1 encoding – decoding

The best way to print simple reports in Java

Multithreading – reentry locking: advantages and disadvantages?

Variable fields of objects in Java collections

Execute diff in Java

Java – spring application startup error: source cannot be empty

Java – manage JAXB generated classes in the Maven project

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