Using Java to understand program logic (14)

13 There is nothing to say. Again here I want to mention, blog Park with the label is very good, but the essay file will always be inexplicable less what, but to the backstage found not less, this a little trouble, but does not affect reading.

Another, seek attention!!!

Parameter method: required when the parameters must be adjusted one by one corresponding

String particularity: If this value is found in memory when defined, then no new space will be opened to directly reference an existing address

String has an identity once the definition cannot be modified if you modify it to re-open space

String is not recommended for multiple stitching (wasted memory) Recommended: StringBuffer

equals Compare content

= = Compare Memory storage address

Convert toUpperCase () to uppercase

Convert toLowerCase () to lowercase

+: Can stitch strings and any type
Concat: Only string types can be spliced

LastIndexOf () returns the index where the original string is located

CharAt () returns the specified index character

Trim () remove front and rear spaces

Append () Append

Insert () insertion

Using Java to understand program logic (14)