Generate fixed length Strings filled with whitespaces in java

Generate fixed length Strings filled with whitespaces in java

To generate fixed-length strings filled with whitespace characters in Java, you can use the String.format method or the StringUtils class from the Apache Commons Lang library. Here are examples of both approaches:

  1. Using String.format:

    You can use the String.format method to create a fixed-length string filled with whitespace characters:

    int desiredLength = 10; // Adjust the desired length as needed String whitespaceString = String.format("%" + desiredLength + "s", ""); // Print the generated string System.out.println("Whitespace String: '" + whitespaceString + "'");

    In this example, we use the % character followed by the desired length and s to indicate that we want to format an empty string with a specified length.

  2. Using Apache Commons Lang (StringUtils):

    If you have Apache Commons Lang in your project, you can use the StringUtils class to create fixed-length strings:

    import org.apache.commons.lang3.StringUtils; int desiredLength = 10; // Adjust the desired length as needed String whitespaceString = StringUtils.repeat(" ", desiredLength); // Print the generated string System.out.println("Whitespace String: '" + whitespaceString + "'");

    In this example, we use the StringUtils.repeat method to repeat a space character (" ") a specified number of times to create the desired length.

Both of these approaches will generate a fixed-length string filled with whitespace characters, and you can adjust the desiredLength variable to match your specific requirements.

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