16 questions
After studying about @Bean, I wondered if @Bean's class generally covers classes with fields and gettersetters.If so, what are the benefits of declaring an object without using @Bean as shown in the c...
When specifying the type of Java generic (like the Union type of TypeScript), is it not possible to specify a type such as String or Long type?Image (?) class Test <Textends String | extensions Lon...
ClassCastException occurs in the extended for statement.How do I fix the Id of each Student object to the console so that there are no errors?Thank you. ■ Test class@ Controller public class test { @R...
I would like to know how to correct the following implementation.private boolean isChange(String oldStr, String newStr){ if(StringUtils.isEmpty(oldStr)){ if(StringUtils.isEmpty(newStr)){ return true; ...
In order to obtain application launch commands for JavaVM (1.8.0_222) running in the server (based on RHEL7/CentOS7) we run jcmd (1.8.0_66) with VM.command_line option as shown below (once a minute co...
[[a, a, a], [b, b, b], [c, c]][a, a, a, b, b, b, c, c, c]I'd like to do this, but is there any way I can do it on stream at once?// This is what it looks like when you loop normally.List innerA=Arrays...
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