java learning record - Day 0

Before intermittent learned some knowledge of java, but relatively short learning time, spend the day familiar with the most simple java syntax, including:

java basic grammar

java objects and classes

java basic data types

java variable types

java modifier

Operators java

java loop structure

java conditional statements

java switch case

java number and math classes

java character class

Learn relatively shallow, and then continue to deepen in the process of writing code.