Java Archives - Page 26 of 336

Java, Programming

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What Java 8 Stream.collect equivalents are available in the standard Kotlin library?

In Java 8, there is Stream.collect which allows aggregations on collections. In Kotlin, this does not exist in the same way, other than ...

May 30, 2022
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Java, Programming

IT Nursery

Getting java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory exception

i am executing simple Dependency Injection program of spring & getting this exception. I have already included common-logging1.1.1.jar and spring.jar file. Could you ...

May 30, 2022
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Java, Programming

IT Nursery

Java equivalent to C# extension methods

I am looking to implement a functionality in a list of object as I would in C# using an extension method. Something like ...

May 30, 2022
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Java, Programming

IT Nursery

Java 8 stream reverse order

General question: What’s the proper way to reverse a stream? Assuming that we don’t know what type of elements that stream consists of, ...

May 30, 2022
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Java, Programming

IT Nursery

How can I get System variable value in Java?

How can I get the System Variable value which is present in MyComputer -> Properties -> Advanced -> Environment Variables -> System Variables ...

May 30, 2022
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Java, Programming

IT Nursery

Convert Enumeration to a Set/List

Is there some one-liner bridge method to dump a given Enumeration to java.util.List or java.util.Set? Something built-in like Arrays.asList() or Collection.toArray() should exist ...

May 30, 2022
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Java, Programming

IT Nursery

Bytes of a string in Java

In Java, if I have a String x, how can I calculate the number of bytes in that string? 9 Answers 9

May 30, 2022
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Java, Programming

IT Nursery

Rename a file using Java

Can we rename a file say test.txt to test1.txt ? If test1.txt exists will it rename ? How do I rename it to ...

May 30, 2022
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Java, Programming

IT Nursery

How to check if a JSON key exists?

So, I get some JSON values from the server but I don’t know if there will be a particular field or not. So ...

May 30, 2022
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Java, Programming

IT Nursery

How to find Java Heap Size and Memory Used (Linux)?

How can I check Heap Size (and Used Memory) of a Java Application on Linux through the command line? I have tried through ...

May 30, 2022
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