<ul><li>The java.util.Scanner class in Java can read input from various sources like System.in, File, InputStream, Path, Readable, and String.</li><li>It implements the Closeable and AutoCloseable interfaces to manage resources efficiently.</li><li>The scanner close method will automatically close its input source if it implements the Closeable interface.</li><li>Eclipse IDE can detect resource leaks, as shown in this example, and provide warnings.</li><li>Using try-with-resources is a recommended way to automatically close resources like scanners.</li><li>Closing a scanner properly is crucial to avoid memory leaks and resource locking issues.</li><li>The article includes examples of properly closing a scanner when reading from a file or System.in.</li><li>By utilizing try-with-resources, the scanner and its associated resources are closed efficiently even in case of exceptions.</li><li>Tests are demonstrated to show the consequences of accessing closed scanners or System.in.</li><li>Overall, the article emphasizes the importance of correctly closing scanners in Java to prevent resource leaks and ensure efficient resource management.</li></ul>

Closing Scanner Java Example

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