Join the social network of Tech Nerds, increase skill rank, get work, manage projects...
 
  • String Comparison using equals() and equalsIgnoreCase():

    • 0
    • 0
    • 0
    • 0
    • 0
    • 0
    • 0
    • 0
    • 462
    Comment on it

    equals() and equalsIgnoreCase():

    Both are used to compare two strings for equality and both methods are of String class.

    equals() general form:

    boolean equals(Object str)

    It returns true if the invoking string and the string passed in the equals function contains the same characters otherwise it returns false. Both strings must be in same case( Case-sensitive).

    equalsIgnoreCase() general form:

    boolean equalsIgnoreCase(String str)

    It works same as equals() method but it is not case-sensitive.

    Example:

    class StrComp {
    public static void main(String args[]) {
    String str1 = "Java";
    String str2 = "Java";
    String str3 = "Ajax";
    String str4 = "JAVA";
    System.out.println(str1 + " equals " + str2 + " -> " +   //return true as str1 and str2 cotains same data
    str1.equals(str2));
    System.out.println(str1 + " equals " + str3 + " -> " +  //return false as str1 and str3 cotains  different data
    str1.equals(str3));
    System.out.println(str1 + " equals " + str4 + " -> " +  //return false as str1(Java) is different from str4(JAVA)
    str1.equals(str4));
    System.out.println(str1 + " equalsIgnoreCase " + str4 + " -> " +
    str1.equalsIgnoreCase(str4));
    }
    }


    Output:
     

    Java equals Java -> true
    Java equals Ajax -> false
    Java equals JAVA-> false
    Java equalsIgnoreCase JAVA -> true

     

 0 Comment(s)

Sign In
                           OR                           
                           OR                           
Register

Sign up using

                           OR                           
Forgot Password
Fill out the form below and instructions to reset your password will be emailed to you:
Reset Password
Fill out the form below and reset your password: