T.I.L_220731

What’s New for Today

1. Java Spring Framework
   • recap
   • Java Exception Handling
     • Checked Error
       • Exception class
       • always need to handle error(catch/throws)
     • Unchecked Error
       • RuntimeException
       • not mandatory to handle error
     • Checked Error vs Unchecked Error
       • limitations for checked error
         • unrecoverable errors
         • dependent errors
2. JPA Recap
   • Relational Mapping
   • ManyToOne
   • Object Graph
   • join columns
   • relation owner
3. Algorithm
   • 2021 카카오 코딩 테스트 - 1차 - 5