String: compareTo(String stringValue)

int compareTo(String anotherString): Compares two strings lexicographically.
int compareToIgnoreCase(String str): Compares two strings lexicographically, ignoring case differences.

The result of the compareTo(String anotherString) and compareToIgnoreCase(String str) is shown here:

Value	Meaning
Less than zero	The invoking string is less than str.
Greater than zero	The invoking string is greater than str.
Zero	The two strings are equal.


public class Main {
  public static void main(String[] argv) {
    String str = "Java2s.com";
    String str2 = "java2s.com";
    System.out.println(str.compareTo(str2));
    System.out.println(str.compareToIgnoreCase(str2));

  }
}

The output:


-32
0

compareToIgnoreCase(String str) returns the same results as compareTo( ). It only ignores the case differences.


public class Main {

  public static void main(String args[]) {
    System.out.println("A".compareToIgnoreCase("a"));
  }
}

The output: