Java_13:多维数组

# learn_core_java_day_13 Day 01 : Java Programming Basics Day 02 : Variables, Data Types and Assignment. Day 03 : More Variables / Type Casting Day 04 : Introducing Objects Day 05 : Methods / Functions Day 06 : Custom Classes Day 07 : JavaDoc and Unit Tests Day 08 : If-Else statement Day 09 : Switch / If-Else Ladder Day 10 : For Loop Day 11 : While Loops Day 12 : Arrays Day 13: Multidimensional Arrays Day 14: ArrayList and Collections Day 15 - Sorting and Searching Day 16: Exceptions Day 17: File Input/Output Day 18: GUI Programming with Java Swing Day 19: Interfaces and Inheritence. Day 20: Web Services