- Creating JSON documents from java classes using gson
- setScale (BigDecimal)
- getContentResolver (Context)
- scheduleAtFixedRate (ScheduledExecutorService)
- Connection (java.sql)
A connection represents a link from a Java application to a database. All SQL
statements and results
- Deque (java.util)
A linear collection that supports element insertion and removal at both ends.
The name deque is shor
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- Semaphore (java.util.concurrent)
A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- StringUtils (org.apache.commons.lang)
Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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