How to convert String to long in Java using Long.parseLong and Long.valueOf methods. Simple example provided.

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How to convert String to int in Java using Integer.parseInt and Integer.valueOf methods. Simple example provided.

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How to parse CSV file in Java and display all the value.The solution treats the case when a column contains the delimiter and the double quote character.

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Luhn algorithm implementation in Java with example for both calculate the check digit and validate the number.

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Windows command prompt basics commands like ping, telnet, dir, cd, ipconfig and tools like Task Manager, Services, Registry.

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JDBC Statement vs PreparedStatement with example. Comparison between around SQL Injection using SELECT query.

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