How To Compare 2 String Inwards Coffee - String Comparing Example

String comparing is a mutual programming chore together with Java provides several means to compare ii String inwards Java. String is a special cast inwards Java, String is immutable together with It’s used a lot inwards every unmarried Java programme starting from uncomplicated examine to firm Java application. In this Java String compare tutorial nosotros volition meet different ways to compare ii String inwards Java together with discovery out how they compare String together with when to run equals() or compareTo() for comparing etc.

Here are iv examples of comparing String in Java

1) String comparing using equals method

2) String comparing using equalsIgnoreCase method

2) String comparing using compareTo method

4) String comparing using compareToIgnoreCase method

We volition meet String compare Example using each of this method inwards illustration section, before that let's larn but about theory:

This article is inwards continuation of my before postal service on String  e.g. Difference betwixt String together with StringBuffer inwards Java together with How to supervene upon String inwards coffee using regular expression etc. If y'all haven’t read them already y'all may discovery them useful together with worth reading.

Compare ii String using equals method inwards Java

5 tips to override equals()method inwards Java for to a greater extent than details on equals together with its implementation. For illustration for ii Strings "Sony" together with "Sony", equals() will render truthful but for "Sony" together with "SONY" it volition render false.

Compare String using equalsIgnoreCase method inwards Java

equalsIgnoreCase is to a greater extent than liberal than equals together with compare ii strings ignoring at that topographic point case. So if ii String contains same characters together with inwards same club despite of at that topographic point instance e.g. lower case, upper case, Capital instance or Camel instance they volition hold out equal past times equalsIgnoreCase.For illustration "sony" together with "SONY" ii Strings volition hold out same past times equalsIgnoreCase together with it volition render truthful but "Sony" together with "Samsung" volition non hold out same together with it volition render fake because they don't incorporate same characters.

Comparing String using compareTo

compareTo are actual comparing method dissimilar equals()and equalsIgnoreCase() together with tell us whether ii Strings are lexicographically equal, precedes or follows each other. if y'all desire to form Strings lexicographically compareTo() method is used. this is too called natural club of String.   returns cipher if ii Strings are same, less than cipher if calling string comes before declaration string together with greater than cipher if calling string comes afterward than declaration string every bit shown inwards illustration below. See things to recall acre overriding compareTo method inwards Java for more special on compareTo method.        

Compare String using compareToIgnoreCase

Similar to compareTo() method amongst ignoring instance similar equalsIgnoreCase() together with render same values every bit returned past times compareTo during String comparison.

Don't run "==" for String comparison

Many Java programmer makes mistake of using "==" for string comparison. "==" but depository fiscal establishment gibe if ii reference variable are pointing ii same object inwards Java heap together with since String is immutable inwards Java together with maintained inwards String puddle ii String literal refer same String object which gives feel that "==" tin hold out used to compare string which is incorrect. e'er run equals() method for equality depository fiscal establishment gibe together with compareTo method for actual string comparison.

Another means of comparing String is writing custom Comparator inwards Java. write your comparing logic inwards compare() method together with than y'all tin run that logic to compare ii strings.

public class StringComparisonExample {

    public static void main(String args[]) {

        String tv = "Bravia";
        String tv set = "Bravia";

        // String compare illustration using equals
        if (tv.equals(television)) {
            System.out.println("Both tv together with tv set contains same letters together with equal past times equals method of String");
        }

        // String compare illustration inwards coffee using compareTo
        if (tv.compareTo(television) == 0) {
            System.out.println("Both tv together with tv set are equal using compareTo method of String");
        }

        tv set = "BRAVIA";

        // Java String comparing illustration using equalsIgnoreCase
        if (tv.equalsIgnoreCase(television)) {
            System.out.println("tv together with tv set are equal past times equalsIgnoreCase method of String");
        }

        // String comparing illustration inwards coffee using CompareToIgnoreCase
        if (tv.compareToIgnoreCase(television) == 0) {
            System.out.println("tv together with tv set are same past times compareToIgnoreCase of String");
        }

        String sony = "Sony";
        String samsung = "Samsung";

        // lexicographical comparing of String inwards Java amongst ComapreTo
        if (sony.compareTo(samsung) > 0) {
            System.out.println("Sony comes after Samsung inwards lexicographical order");
        } else if (sony.compareTo(samsung) < 0) {
            System.out.println("Sony comes before Samsung inwards lexicographical order");
        }
    }

}

Output:
Both tv together with tv set contains same letters together with equal past times equals method of String
Both tv together with tv set are equal using compareTo method of String
tv together with tv set are equal past times equalsIgnoreCase method of String
tv together with tv set are same past times compareToIgnoreCase of String
Sony comes after Samsung inwards lexicographical order

These were but about common examples of comparing string inwards Java. Avoid mutual error of using equality operator “==” for comparing String instead e'er run equals() method.

Further Learning
Data Structures together with Algorithms: Deep Dive Using Java
Why grapheme array is ameliorate than String for storing password

How to separate String inwards coffee amongst Example

How to convert String to Date inwards Java amongst Example

How to convert String to Enum inwards Java amongst Example

How to convert String to Integer inwards Java amongst Example

How to convert String to Double inwards Java amongst Example

How to convert char to String inwards Java amongst Example

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