More than 10 pieces of code must be known in Java programming

Add content to the end of a file

Strings have integer conversions to each other

Turn string to date

Java.util.Date = Java.text.DateFormat.getDateInstance (). Parse (Date String);

Get the name of the current method

String methodName = Thread.currentThread().getStackTrace()[1].getMethodName();Using JDBC to link Oracle

Put Java util. Date turns into SQL. Date

Fast file copy with NiO

Create JSON-formatted data

(Java Learning Group 515675832, there is any Java problem or want to improve the ability of Java to look at OH

Generate PDF using Itext jar

HTTP proxy Settings

Single Instance Singleton example

Screen Capture Program

List files and directories

Convert Array to Map

Send mail

HTTP request to send generation data

Changing the size of an array

More than 10 pieces of code must be known in Java programming