Here we discuss the Introduction to String Comparison in Java, How to Compare String in Java, along with codes and outputs. This is a guide on String Comparison in Java.
They are explained in the above section in detail. All these methods are used based on the requirements. There are different methods such as equals, compareTo, etc., available in order to compare the strings. ("\nComparison of str5 : " + str5 + " and str6 : " + str6) Ī string is a sequence of characters, and its objects are immutable. ("\nComparison of str3 : " + str3 + " and str4 : " + str4) There are two types of join() methods in the Java String class. The join() method is included in the Java string since JDK 1.8. In the String join() method, the delimiter is copied for each element. ("Comparison of str1 : " + str1 + " and str2 : " + str2) Java String join() The Java String class join() method returns a string joined with a given delimiter. Java program to demonstrate different methods for string comparison Now, let us see all the above-mentioned methods in a single program to better understand string comparison.
Similarly, a positive value is returned as str3 is greater than str4, and a negative value is returned as str5 is less than str6.Since both the str1 and str2 are equal without considering the cases, 0 is returned. Here, a combination of compareTo and Ignorecase is done.string comparison using compareToIgnoreCase method Java program to demonstrate compareToIgnoreCase method The difference is that comparison won’t be affected whether the strings are in upper case or lower case. This method is similar to the compareTo method, where strings are compared lexicographically. In the case of str3 and str4, str5 and str6, the two strings are different.Since the equalsIgnoreCase method is used, str1 and str2 are equal even though they are of different cases(small case and upper case).string comparison using equalsIgnoreCase method Java program to demonstrate equalsIgnoreCase method Using this method, two strings will be compared without considering whether the string is upper case or lower case. At the same time, str3 is less than str4, and str5 is less than str6 lexicographically.Since two strings str1 and str2 are equal lexicographically, 0 is returned.string comparison using compareTo method Java program to demonstrate compareTo method Two strings str1 and str2 are present and The value is based on whether the first string is equal to, less than or greater than the 2 nd string. In this method, values are compared lexicographically and return a value of integer type. Also, Str3 and Str4, str5 and str6 are not equal.Here, two strings str1 and str2, are equal as they are of the same case.("Both str5 : " + str5 + " and str6 : "+ str6 +" are not equal") ("Both str5 : " + str5 + "and str6 : "+ str6 +" are equal") ("Both str3 : " + str3 + " and str4 : "+ str4 +" are not equal") ("Both str3 : " + str3 + " and str4 : "+ str4 +" are equal") ("Both str1 : " + str1 + " and str2 : "+ str2 +" are not equal") ("Both str1 : " + str1 + " and str2 : "+ str2 +" are equal") Below is an example of the equals() method. upper or lower case), it will be considered as not equal. If the strings are not in the same case (i.e.
Web development, programming languages, Software testing & othersĮquals() method compares two strings based on the string content.
Based on our requirement we can override the toString() method in our class to provide our own representation.Start Your Free Software Development Course If we want to return the object’s state from this method we must override it in the subclass.
It should display Student object data, rather than its references. The above outputs are not meaningful messages. ("Student Array = " + Arrays.toString(st)) ("Byte Array = " + Arrays.toString(byteArr)) īyte Array = // short array Now, let us demonstrate the byte, short, long, float, double, char, boolean array. Let us see a Java program to demonstrate the Arrays.toString() method. It Returns “null” if the passed array is null. The string representation consists of a list of the array’s elements, enclosed in square brackets “ ” and the adjacent elements are separated by the characters “, ” (a comma followed by a space). The Arrays.toString() method returns a string representation of the contents of the specified array. public static String toString(Object a).public static String toString(boolean a).public static String toString(double a).public static String toString(float a).public static String toString(short a).The Arrays.toString() with all forms were introduced in the Java1.5 version. There are many overloaded forms of the toString() method in the Arrays class. Most of the time the toString() method of Arrays class is used to display the array elements. In Java, the Arrays.toString() method is given to convert the array to string.