Recent questions tagged java

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java - How to change checkbox checked color programmatically

I'm using the CheckBox view in Android. I would like to change the color of it when its checked. Right now its ... on how to change this color? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Android: How can I set a listener to the MenuButton?

I want to do a custom action when pressing on the Menu button on the phone. Is it possible to set an ... - I've already tried this. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to tell if an X and Y coordinate are inside my button?

I have managed, with great difficulty, to make a bitmap overlay the screen. I can also get touch input, however it ... //} return true; } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Zipping a huge folder by using a ZipFileSystem results in OutOfMemoryError

The java.nio package has a beautiful way of handling zip files by treating them as file systems. This enables ... I doing something wrong here? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Servlet JSP web.xml

I see a feature in NetBeans for selecting a JSP for a Servlet and the result XML in web.xml is like this ... behind architecture in ASP .NET? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - JPA / Hibernate unidirectional one-to-one mapping with shared primary key

I'm having a very hard time trying to get a unidirectional one-to-one relationship to work with JPA ( ... Any help is greatly appreciated! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Compiler Error - 'Error: Could not find or load main class com.sun.tools.javac.Main'

I just started learning Java and I installed JDK on my computer, but now I am trying the SIMPLEST of Java ... Any help would be appreciated! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Explanation of the Collections.max signature

I was reading an article on Java Generics when I stumbled on this method signature: static <T extends Object & ... for quite some time now.. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why can't I throw an exception while using the ternary operator

This doesn't compile and gives the following error: Illegal start of expression. Why? public static AppConfig getInstance( ... ("error")); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Extracting a file from the currently running JAR through code

Are there any built-in methods I can use to allow users to extract a file from the currently running JAR and ... their disk? Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Test-resources of dependencies not in classpath?

I have a multi module Spring project that I set up using Maven: my-root (pom) - my-logic - my-webapp (depending ... -webapp. How can I fix that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Spring Data REST - PUT request does not work properly since v.2.5.7

Since version 2.5.7 Spring Data REST does not properly perform a PUT request to update resource which has ... DATAREST-1001 and DATAREST-1012. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - FileInputStream to byte array in Android application

I have a FileInputStream created using Context.openFileInput(). I now want to convert the file into a ... write to the ByteArrayOutputStream. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Expand environment variables in text

I'm trying to write a function to perform substitutions of environment variables in java. So if I had a string ... it works. Can anyone help? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Is there a difference between ECDH and ECDSA keys?

I'm building a network application that uses BouncyCastle as a cryptography provider. Let's say you have this ... each message using ECDSA. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What does it mean <S extends T> save (S entity); in Spring Repository?

In Spring Data project the CrudRepository provides sophisticated CRUD functionality for the entity class that is being managed ... S thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Setting the value for jsf InputSecret during page load from the managed bean

I am creating a database setting jsf page which shows the value from the properties file during the page load. The ... 3.3.2 Thanks in advance See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to avoid MATLAB crash when opening too many figures?

Sometimes I start a MATLAB script and realize too late that it is going to output way too many figures. Eventually I ... ('figure'); end end end See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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319 views

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java - "error: cannot find symbol variable xml" while trying google analytics

I am trying to implement google analytics for one of my android apps. I am totally new for analytics and ... suggestion to go forwards. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Jackson error "Illegal character... only regular white space allowed" when parsing JSON

I am trying to retrieve JSON data from a URL but get the following error: Illegal character ((CTRL-CHAR, code 31) ... Factory Unlocked" } ] } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - how to use class file from another war

We have two different web application and we want to extend few controllers of one war into another war. ... package com..platform.employer.web See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Hibernate TypeResolver

I'm aware that hibernate recently redid its type system in 3.6. I think this now allows you do associate a java ... the new type stuff in 3.6. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Strange behavior when deserializing nested, generic classes with GSON

I'm writing a class which will connect to a server and based on some arguments, retrieve a json- ... or suggestions are greatly appreciated! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin (default-compile) on project: Fatal error compiling: tools.jar not found

I have done all the steps provided in http://www.tutorialspoint.com/jsf/jsf_environment_setup.htm Apache Maven and Apache ... What should I do? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Tomcat 8 URL Rewrite

I have an AngularJS webapp and Jersey backend. I need to setup URL rewriting, so everything except given exceptions ... behaved in the same way. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Setting the focus to a text field

I have an application developed in netbeans and I want to set the focus to a certain jTextField when a panel is ... focus to the desired input. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Maven dependency within dependency with different scope

Say I have two Maven dependencies defined in a project like below. <dependency> <groupId>com.thoughtworks. ... practice in this situation. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What is subclassing?

I am new to java and I am trying to create an XML document and clone a specific node (minus the textnode) ... question is what is sub-classing? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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