Problem while adding component to JPanel or JList??

In JPanel as well JList(Different ,Not related to JPanel)

when i adds some data in JList
when adding things going out of height of JList(SetBounds)
then it adds but not looks good !!

To get better help sooner, post a SSCCE (Short, Self Contained, Compilable and Executable) example that demonstrates the problem.

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