1.ASCII coding table
0--48
A--65
a--97
2.
Unicode Unicode
Character 'in' to 20013
3. arithmetic operators
type double plus an int result is the double
byte short char int type will be changed and then computes
4. The addition of a variety of uses
Is the string String. String representing the operation to connect
When any character string data type string for connection will become
The arithmetic operators increment and decrement
++ and -
++ ++ front and rear are different
6. Assignment Operators
7. Comparison Operators
8.
8. The ternary operator
9. The method of entry
Outside the main method defined inside the class
Method defines the order does not matter, but it can not be nested
Call other methods in which the main method, and then to grasp the overall grasp of the local
10.Jshell script
According to the script as script say to do
Precautions 11. Compiler
12.
The code error, because there are variables
13. Process and sequential structure
14. Analyzing called judgment statement Statement
15. if else statements
