Java Archives - Page 23 of 336

I’m investigating the following java.lang.VerifyError java.lang.VerifyError: (class: be/post/ehr/wfm/application/serviceorganization/report/DisplayReportServlet, method: getMonthData signature: (IILjava/util/Collection;Ljava/util/Collection;Ljava/util/HashMap;Ljava/util/Collection;Ljava/util/Locale;Lorg/apache/struts/util/MessageReÂ˜Ì´MtÌ´MÃšwÂ€mÃ§wÂ€mp:Â”MÂŒÂŒ at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Class.java:2357) at java.lang.Class.getConstructor0(Class.java:2671) It occurs when the ...

May 31, 2022
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Java, Programming

IT Nursery

When do you use varargs in Java?

I’m afraid of varargs. I don’t know what to use them for. Plus, it feels dangerous to let people pass as many arguments ...

May 31, 2022
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Java, Programming

IT Nursery

Why is String immutable in Java?

I was asked in an interview why String is immutable I answered like this: When we create a string in java like String ...

May 31, 2022
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Java, Programming

IT Nursery

Java Regex Capturing Groups

I am trying to understand this code block. In the first one, what is it we are looking for in the expression? My ...

May 31, 2022
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Java, Programming

IT Nursery

Picking a random element from a set

How do I pick a random element from a set? I’m particularly interested in picking a random element from a HashSet or a ...

May 31, 2022
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