Java String CompareTo() Method

Description

The Java String compareTo() technique is utilized for comparing two strings according to the glossary explanations. Each value of both the strings is changed into a Unicode character for comparison. If both the strings are equivalent then this process returns 0 else it returns a positive or negative value.

Syntax

Here is the syntax of this method:

int compareTo(Object o)

Parameters

Here is the detail of parameters −

• O − the Object to be compared.

Return Value

• The value 0 if the argument is a string lexicographically equal to this string; a value less than 0 if the argument is a string lexicographically greater than this string; and a value greater than 0 if the argument is a string lexicographically less than this string.

Example

public class Test {

   public static void main(String args[]) {
      String str1 = "Strings are immutable";
      String str2 = new String("Strings are immutable");
      String str3 = new String("Integers are not immutable");
      
      int result = str1.compareTo( str2 );
      System.out.println(result);
      
      result = str2.compareTo( str3 );
      System.out.println(result);
   }
}

This will produce the following result:

Output

0
10

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