java Archives - Page 9 of 302

What are good reasons to prohibit inheritance in Java, for example by using final classes or classes using a single, private parameterless constructor? ...

June 2, 2022
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Java, Programming

IT Nursery

Why is creating a Thread said to be expensive?

The Java tutorials say that creating a Thread is expensive. But why exactly is it expensive? What exactly is happening when a Java ...

June 2, 2022
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Java, Programming

IT Nursery

Assert equals between 2 Lists in Junit

How can I make an equality assertion between lists in a JUnit test case? Equality should be between the content of the list. ...

June 2, 2022
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Java, Programming

IT Nursery

SparseArray vs HashMap

I can think of several reasons why HashMaps with integer keys are much better than SparseArrays: The Android documentation for a SparseArray says ...

June 2, 2022
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Java, Programming

IT Nursery

Java/JDK for the Apple M1 chip

Will there need to be a special release of OpenJDK to support the new Apple M1 chip? I see that there are currently ...

June 2, 2022
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Java, Programming

IT Nursery

If I synchronized two methods on the same class, can they run simultaneously?

If I synchronized two methods on the same class, can they run simultaneously on the same object? For example: class A { public ...

June 2, 2022
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Java, Programming

IT Nursery

multiple packages in context:component-scan, spring config

How can I add multiple packages in spring-servlet.xml file in context:component-scan element? I have tried <context:component-scan base-package="z.y.z.service" base-package="x.y.z.controller" /> and <context:component-scan base-package="x.y.z.service, x.y.z.controller" ...

June 2, 2022
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Java, Programming

IT Nursery

Unable to locate tools.jar

I am building a project in Java. I have this error: Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre6\lib\tools.jar I ...

June 2, 2022
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