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Compare two Strings lexicographically in Java programming
We can compare two strings lexicographically using following ways in Java.
Using String.compareTo(String) method. It compares in case sensitive manner.
Using String.compareToIgnoreCase(String) method. It compares in case insensitive manner.
Using String.compareTo(Object) method. It compares in case sensitive manner.
These methods returns the ascii difference of first odd characters of compared strings.
Example
public class Tester { public static void main(String args[]) { String str = "Hello World"; String anotherString = "hello world"; Object objStr = str; System.out.println( str.compareTo(anotherString) ); System.out.println( str.compareToIgnoreCase(anotherString) ); System.out.println( str.compareTo(objStr.toString())); } }
Output
-32 0 0
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