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Java String Compare Example

Submitted by Andr on Tue, 10/26/2010 - 20:28

Java Examples

/*
Java String compare example
This Java String compare example describes how Java String is
compared with another Java String object or Java Object.
*/
 
public class JavaStringCompareExample{
    
    public static void main(String args[]){
    
        /*
        Java String class defines following methods to compare Java String object.
       
        1) int compareTo(String anotherString)
        compare two string based upon the unicode value of each character in the String.
        Returns negative int if first string is less than another. Returns positive
        int if first string is grater than another and returns 0 if both strings are same.
       
        2) int compareTo(Object obj)        
        Behaves exactly like compareTo(String anotherString) if the argument
        object is of type String, otherwise throws ClassCastException.
       
        3) int compareToIgnoreCase(String anotherString)        
        Compares two strings ignoring the character case of the given String.
        */
       
        String str = "Hello World";        
        String anotherString = "hello world";        
        Object objStr = str;
       
        /* compare two strings, case sensitive */        
        System.out.println(str.compareTo(anotherString));
       
        /* compare two strings, ignores character case  */        
        System.out.println(str.compareToIgnoreCase(anotherString));
       
        /* compare string with object */        
        System.out.println(str.compareTo(objStr.toString()));
       
    }
 
}
 
/*
OUTPUT of the above given Java String compare Example would be:
-32
0
0
*/