Java 归档 - Page 51 of 655

Java connection pool without JNDI?

I have a connection pool to access MySQL database from servlet I use JNDI to get the data source. JNDI is in my meta-i……

Java

2020-09-06

Java – MIDP limited sockets?

In my opinion, there are some restrictions on socket creation in MIDP In order to isolate any possibility that it is a……

Java

2020-09-06

Is it feasible for Java to check locking by forcing synchronization twice?

I've read everything about double check locking fixes that will never work. I don't like delayed initialization, but i……

Java

2020-09-06

Java – how to get enumeration values from attributes

I have an enumeration with values valid and invalid, which has Boolean attributes associated with it I want to get the……

Java

2020-09-06

Java – call executorservice. Java from completable future shutdownNow

When one of the already running tasks throws an exception, I need to cancel all the scheduled but not yet running comp……

Java

2020-09-06

How to use resourcebundle to avoid hard coding configuration paths in Java applications?

I want to eliminate the dependency of hard coded path of configuration data in my java application. I know that using ……

Java

2020-09-06

Java – how to select overloaded methods by parameter types?

I tried to overload my method based on the parameter type: Fielderror extends to objecterror private String getMessage……

Java

2020-09-06

Java – string as reference type

See English answer > java string variable setting – reference or value? 9 String s1 = "x"; String s2 = s1; s1 = "xy……

Java

2020-09-06

Java – insert rows programmatically (parent and child)

I am using spring and JDBC template This scenario is customer table and orders table - parent - child relationship I w……

Java

2020-09-06

java-ee – ColdFusion web. xml？

For deployment descriptors in J2EE Web containers / Web XML file, does ColdFusion simulation exist? I know that CF run……

Java

2020-09-06

Java – decimalformat() and problems with Russian computers

I have a BigDecimal, and I convert it to string to make some modifications DecimalFormat decimalFormat = new DecimalFo……

Java

2020-09-06

Java – spring MVC – JSP cannot be rendered

I just started trying to create a new project using spring MVC, and I encountered a problem. There is no manual or tut……

Java

2020-09-06

Migration issues from JUnit 4 to JUnit 5

I'm migrating my code base from junit4 to junit5 I used mockito in my testcase Below is the different version I use fo……

Java

2020-09-06

Java – JSF inputtext and sessions in JSF managed beans

I want to know how to read the value of the input text from the managed bean @H_ 502_ 9@ @H_ 502_ 9@ <h:inputText i……

Java

2020-09-06

Is the tag a Java statement?

Whether the tag is a Java statement and whether the tag is a statement defined as a statement in the Java language spe……

Java

2020-09-06

Java – custom predicate link

I'm learning java 8 I'm trying to create a custom predict link method, as shown below @FunctionalInterface public inte……

Java

2020-09-06

Java – returns Boolean or try catch

When a function or method contains error / invalid data, return false or throw an exception? public boolean login(Stri……

Java

2020-09-06

Java – how can I use my program to solve these problems? (many problems were explained internally)

This question is not suitable for timid people and takes time I'm learning Java. I want to know if someone can tell me……

Java

2020-09-06

Java generalizes methods to validate nulls in object parameters

I'm trying to implement a logic. I have a POJO class with 7 properties The following is the implementation Map<Stri……

Java

2020-09-06

Java – how can I guarantee to send a “stay alive” heartbeat?

We have an RMI client application written in Java that needs to send "keep alive" messages to the server application r……

Java

2020-09-06

Java – error calling method check when deploying war on Tomcat

When I deploy the war generated by ant on the local system (copy / paste under / webapps), everything is normal The pr……

Java

2020-09-06

How do I resolve errors about incompatible types?

I study java projects on IntelliJ Then I found an error about incompatible types in the try catch block This is part o……

Java

2020-09-06

Java – entity update using JPA / Hibernate

resolvent

Java

2020-09-06

Split or not split classification (in Java)

I have a sentence that is analyzed at different stages First, I get some attributes (such as X, y, z): public class An……

Java

2020-09-06

What is Java util. Concurrent package Net equivalent?

I come from a Java background I think so Net and C # to learn more about concurrency Is there a Java like concurrency ……

Java

2020-09-06

Java transient key word method sugar?

Why not resolve transients by using annotations instead of introducing keywords? It seems that the transient keyword d……

Java

2020-09-06

Java – kotlin stream Peek (…) method

Java. In kotlin util. stream. Stream<> . What is the best choice for Peek (...)? https://docs.oracle.com/javase/……

Java

2020-09-06

Arrange the characters of the array in the order they appear in the Java string

I have a string and an array of characters in the string I want to arrange the characters in the order they appear in ……

Java

2020-09-06

Write alternatives to Java standard class libraries from scratch

I'm just curious, but I wonder if I can completely delete the Java standard class library attached to the JVM and star……

Java

2020-09-06

How to use multithreaded scripts

I am here http://www.get-blog.com/?p=189 Found this multithreaded script Param($Command = $(Read-Host "Enter the scrip……

Java

2020-09-06

Java-8 – how to filter a list, which is the value of the map entry in Java 8?

I have a map < B, list < a > > I want to filter out some a based on some predicates that depend on the key……

Java

2020-09-06

Java – ${ucsrf} what do you do? Is this an implicit El object?

I'm looking at some source code and trying to find out_ The source of CSRF As far as I know, it looks like an implicit……

Java

2020-09-06

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Java connection pool without JNDI?

Java – MIDP limited sockets?

Is it feasible for Java to check locking by forcing synchronization twice?

Java – how to get enumeration values from attributes

Java – call executorservice. Java from completable future shutdownNow

How to use resourcebundle to avoid hard coding configuration paths in Java applications?

Java – how to select overloaded methods by parameter types?

Java – string as reference type

Java – insert rows programmatically (parent and child)

java-ee – ColdFusion web. xml？

Java – decimalformat() and problems with Russian computers

Java – spring MVC – JSP cannot be rendered

Migration issues from JUnit 4 to JUnit 5

Java – JSF inputtext and sessions in JSF managed beans

Is the tag a Java statement?

Java – custom predicate link

Java – returns Boolean or try catch

Java – how can I use my program to solve these problems? (many problems were explained internally)

Java generalizes methods to validate nulls in object parameters

Java – how can I guarantee to send a “stay alive” heartbeat?

Java – error calling method check when deploying war on Tomcat

How do I resolve errors about incompatible types?

Java – entity update using JPA / Hibernate

Split or not split classification (in Java)

What is Java util. Concurrent package Net equivalent?

Java transient key word method sugar?

Java – kotlin stream Peek (…) method

Arrange the characters of the array in the order they appear in the Java string

Write alternatives to Java standard class libraries from scratch

How to use multithreaded scripts

Java-8 – how to filter a list, which is the value of the map entry in Java 8?

Java – ${ucsrf} what do you do? Is this an implicit El object?

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