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- setContentView (Activity)
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Provides access to system-related information and resources including standard
input and output. Ena
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A connection to a URL for reading or writing. For HTTP connections, see
HttpURLConnection for docume
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A connection represents a link from a Java application to a database. All SQL
statements and results
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TreeSet is an implementation of SortedSet. All optional operations (adding and
removing) are support
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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