Method | Purpose |
s1.equals(s2) | returns true or false |
s1.equalsIgnoreCase(s2) | returns true or false |
s1.compareTo(s2) | returns an integer less than 0
if s1 is less than s2, greater than 0 if s1 is greater than s2,
and equal to 0 if s1 is the same as s2 |
s1.compareToIgnoreCase(s2) | returns an integer less than 0
if s1 is less than s2, greater than 0 if s1 is greater than s2,
and equal to 0 if s1 is the same as s2 |
s1.toUpperCase() | returns the upper case version of string s1 |
s1.toLowerCase() | returns the lower case version of string s1 |
s1.length() | returns the length of string s1 |