How Can I Print Database Results as a Neat Table Using Java\'s System.out?

Printing Database Results as a Table in Java's System.out

When retrieving data from a database, it can be useful to present the results in a tabular format. Java's System.out class provides various methods for printing data to the standard output, but using "t" to separate columns may not always produce satisfactory results, especially when the length of values in the first column varies significantly.

Solution Using System.out.format

To address this challenge, consider employing the System.out.format method. This method allows you to specify the width of each field using format specifiers. For example:

System.out.format("%32s%10d%16s", string1, int1, string2);

In this example:

• "2s" indicates that string1 will be padded to a width of 32 characters.
• "d" specifies that int1 will be padded to a width of 10 characters and formatted as an integer.
• "s" sets the width of string2 to 16 characters.

By using these format specifiers, you can control the alignment and width of each column, ensuring that the table output is neatly formatted.

For further details on the syntax of System.out.format, refer to the Javadocs for java.util.Formatter.

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