Recent questions tagged Java

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java - Injecting a generic factory in Guice

The following code is an example of a factory that produces a Bar<T> given a Foo<T>. The factory doesn't care ... the factory at all. Any tips? 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 - Does the break statement break out of loops or only out of if statements?

In the following code, does the break statement break out of the if statement only or out of the for loop too? I need ... { temp = i; break; } } 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 get a Label with wrapped text?

I ave tried the following code: Label label = new Label(reallyLongString, skin); label.setWrap(true); label. ... a Label with wrapped text? 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 - Can i store unix permissions in a zip file (built with apache ant)?

I'm building a linux installer for a Java application, and I end up with an install.jar and a setup. ... always unzip without x permissions. 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 remove JRE entries from Windows registry?

By mistake I deleted Java folder from my Windows machine. Now I'm getting problems in various plugins and all ... and where they are located! 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 SQLite Cursor out of bounds exception on SELECT count(*) FROM table

The following function is giving me an out of bounds exception... public void count(){ SQLiteDatabase db = table. ... this task the wrong 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 - JavaFX: Could not find or load main class only on linux

I've developed a program in Windows with Java(FX) using Intellij Idea and that worked just fine, I then exported the ... --- --- sample.fxml 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 make maven build of child module with parent module?

I have multiple modules in my project and they are dependent on each other either directly or transitively. ... presence in upstream project? 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 Does Math.pow(x,y) Count as a Double?

I'm writing a Java program to calculate how much food it will take to get a monster to a certain level in My ... totalFood + " food."); } 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 - Obfuscating WAR file with Proguard

I want to obfuscate my web application built as WAR archive, as this sensitive application in first time ... that needs no obfuscation). See Question&Answers more detail:os...

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

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183 views

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java - tomcat not starting

suddenly for some reason tomcat server is not runnin/starting/stopping. below is the result I get when i run ... : Server startup in 15374 ms 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 can I exclude *.DSA and *.SF files from shaded jar?

I have a section in pom.xml <filters> <filter> <artifact>*:*</artifact> <excludes> <exclude>META-INF/*.SF ... anyone know how to overcome it? 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 synchronized keyword needed on primitive getter / setter method?

I read some java code, and found these functions: synchronized void setConnected(boolean connected){ this.connected = ... Or am I mistaken? See Question&Answers more detail:os...

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

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253 views

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java - Spring logs not written in log4j2

I am new to spring and log4j.I am trying a sample Hello World project with spring framework and using log4j2 ... the output file. Thanks, Suma 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 - Understanding Quantifiers

I was going through the Java Tutorial on Quantifiers. There is a difference mentioned among Differences Among ... is not immediately found. See Question&Answers more detail:os...

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

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347 views

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java - Illegal forward reference error for static final fields

I'm trying to compile a Java class which javac rejects with an illegal forward reference error, where the offending ... I'm not aware of? See Question&Answers more detail:os...

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

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355 views

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java - Should I use put() or putIfAbsent() after using getOrDefault()?

Java8 introduced those nice methods getOrDefault() and putIfAbsent(), allowing to write code like: Map<Foo, List<Bar> ... or option 2 "always"? 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 - Execute sql script after jpa/EclipseLink created tables?

is there a possibility to execute an sql script, after EclipseLink generated the ddl? In other words, is it ... (war with ejb3) deployment? 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 the best practice to modify an object passed to a method

After passing an object into a method, I would like to change one of its fields. What's the best practice to do this task in Java? 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: How to include jars in Eclipse, which are not available in repository?

I have copied the JARs into srcmainwebappWEB-INFlib. I use eclipse. If I add the jars one-by-one to Project-> ... once. How should I proceed ? 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 Iterate through List of Object arrays

So right now I have a program containing a piece of code that looks like this... Criteria crit = session. ... any help/advice that is offered. See Question&Answers more detail:os...

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

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253 views

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java - Can't understand Poisson part of Hash tables from Sun documentation

I am trying to understand how HashMap is implemented in Java. I decided that I will try to understand every ... my task much more interesting. 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 - Listing the files in a directory of the current JAR file

I am making a game in JAVA where I want to come up with a list of files in a certain directory in my jar so ... What is the best code to do so? See Question&Answers more detail:os...

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

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571 views

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java - How to convert SVG into PNG on-the-fly

I try to convert an svg into PNG. the svg document is coming from a server as an Inputstream. First, I convert ... .svg").toURI().toString()); 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.cfg.xml not found

I am new to Hibernate, reading this book "Java persistence with Hibernate" and I am trying to implement the ... and table messages 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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390 views

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java - IllegalAccessError: accessing a protected method

I have two classes. Class A has protected method m(), a is an instance of A. Class B is in the ... getting IllegalAccessError... What's wrong? See Question&Answers more detail:os...

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

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341 views

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java - Running each JUnit test in a separate JVM in Eclipse?

I have a project with nearly 500 individual tests in around 200 test classes. Some of these tests don't do a ... like to get the tests working. 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 - Enabling auto resize of JTable only if it fit viewport

I need to create a JTable inside JScrollPane with resizeable columns (when user increase column width - horizontal scrollbar ... } }); } } See Question&Answers more detail:os...

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

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