- Updating database using SQL prepared statement
- scheduleAtFixedRate (Timer)
- getResourceAsStream (ClassLoader)
- setScale (BigDecimal)
- URLEncoder (java.net)
This class is used to encode a string using the format required by
application/x-www-form-urlencoded
- Charset (java.nio.charset)
A charset is a named mapping between Unicode characters and byte sequences.
Every Charset can decode
- KeyStore (java.security)
KeyStore is responsible for maintaining cryptographic keys and their owners.
The type of the syste
- Deque (java.util)
A linear collection that supports element insertion and removal at both ends.
The name deque is shor
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
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