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Commits on Feb 7, 2026

• add threadlocal demos and tests

  chenqifeng92

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Commits on Jan 28, 2026

• lambda表达式demo的单元测试

  chenqifeng92

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• lambda表达式demo

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Commits on Dec 26, 2025

• fixed unit test StreamCollectorsTest.groupingBy

  chenqifeng92

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• Refactor Stream API demos and migrate all unit tests to JUnit 5

  chenqifeng92

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• add Stream API Test

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Commits on Nov 13, 2025

• findPoisonedDuration and LeftmostOneFinder

  chenqifeng92

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Commits on Feb 12, 2025

• fix some test bugs

  chenqifeng92

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• upgrade to junit5, and categorize unit tests into maven test folder for easy automation testing.

  chenqifeng92

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Commits on Feb 11, 2025

• ObjectNullValueInitializer是用于处理字符串和对象的工具类

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Commits on Jan 8, 2025

• SAP interview codes

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Commits on Oct 28, 2024

• 实现一个任务工作流引擎，可以支持定义不同类型的任务步骤，并能处理任务的流转。

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Commits on May 29, 2023

• commonelements

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Commits on Feb 9, 2023

• add TestRandom

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Commits on Oct 30, 2022

• sync mac

  chenqifeng92

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• TwoSum

  

  chenqifeng

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Commits on Dec 9, 2021

• modify compiler version

  

  陈棋烽

  authored and

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Commits on Sep 23, 2021

• prime number

  chenqifeng92

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Commits on Mar 26, 2021

• thread demos

  chenqifeng92

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Commits on Mar 7, 2021

• essential modification

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Commits on Oct 26, 2019

• update .gitignore and device merge

  chenqifeng92

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Commits on Jul 31, 2019

• optimize ValidateIdCard

  chenqifeng92

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• update ValidateIdCard

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Commits on Jul 28, 2019

• set compilerVersion on maven build

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Commits on Jul 22, 2019

• remove target

  chenqifeng92

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• 22JUL2019 build

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• 22JUL2019 build

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Commits on Feb 18, 2019

• modify EssentialDemos.java

  chenqifeng92

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Commits on Jan 5, 2019

• 05JAN2019

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• add some file functions

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Commits on Dec 23, 2018

• add EssentialDemos

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Commits on Jul 24, 2018

• Merge branch 'master' of github.com:chenqifengfree/JavaDemos

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• modified SqlLogConverter add test data

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Commits on Jul 23, 2018

• add somethings about maps

  chenqifeng92

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Commits on Jun 21, 2018

• modify README.md

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