[improve][doc] Java example explaining code without using lombok#19019

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codelipenghui merged 4 commits intoapache:masterfrom AlvaroStream:alvaro/lombok

Dec 26, 2022

+16-6

Commits on Dec 21, 2022

Commits on Dec 22, 2022

Update schema-understand.md
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Commits on Dec 26, 2022

As recommended by Penghui
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