To validate the minimum and maximum length of input text using regular expressions in Java, you can use the following regular expression pattern:

String inputPattern = "^.{3,10}$";

This regular expression pattern matches inputs with a minimum length of 3 characters and a maximum length of 10 characters. The pattern matches any character (except a line break) between 3 and 10 times.

To use this regular expression to validate an input and ensure it meets the minimum and maximum length requirements, you can use the following code:

String input = "Hello, World!";
if (input.matches(inputPattern)) {
    System.out.println("Valid input: " + input);
} else {
    System.out.println("Invalid input: " + input);
}

In the example above, the "input" string is checked if it matches the "inputPattern" regular expression. If it does, it is considered a valid input with a length between 3 and 10 characters.

Note that while this regular expression pattern is a good starting point for validating the length of input text, it may not work for all cases. It's always a good idea to test your regular expression pattern against various inputs and to use additional validation methods (such as getting the length of the input string and comparing it to a predetermined range) to ensure the input is valid.