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A connection to a URL for reading or writing. For HTTP connections, see
HttpURLConnection for docume
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This class contains various methods for manipulating arrays (such as sorting and
searching). This cl
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A specific moment in time, with millisecond precision. Values typically come
from System#currentTime
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Timers schedule one-shot or recurring TimerTask for execution. Prefer
java.util.concurrent.Scheduled
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Is the value null?
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