equals() on String and StringBuffer objects in Java Read Courses Practice Improve Improve Improve Like Article Like Save Article Save Report issue Report Consider the following codes in java: Java // This program prints false class GFG { public static void main(String[] args) { StringBuffer sb1 = new StringBuffer("GFG"); StringBuffer sb2 = new StringBuffer("GFG"); System.out.println(sb1.equals(sb2)); } } Output: false Java // This program prints true class GFG { public static void main(String[] args) { String s1 = "GFG"; String s2 = "GFG"; System.out.println(s1.equals(s2)); } } Output: true The output is false for the first example and true for the second example. In second example, parameter to equals() belongs String class, while in first example it to StringBuffer class. When an object of String is passed, the strings are compared. But when object of StringBuffer is passed references are compared because StringBuffer does not override equals method of Object class.For example, following first program prints false and second prints true. Java // This program prints false class GFG { public static void main(String[] args) { String s1 = "GFG"; StringBuffer sb1 = new StringBuffer("GFG"); System.out.println(s1.equals(sb1)); } } Output: false Java // This program prints true class GFG { public static void main(String[] args) { String s1 = "GFG"; StringBuffer sb1 = new StringBuffer("GFG"); String s2 = sb1.toString(); System.out.println(s1.equals(s2)); } } Output: true Feeling lost in the vast world of Backend Development? It's time for a change! Join our Java Backend Development - Live Course and embark on an exciting journey to master backend development efficiently and on schedule. What We Offer: Comprehensive Course Expert Guidance for Efficient Learning Hands-on Experience with Real-world Projects Proven Track Record with 100,000+ Successful Geeks Commit to GfG's Three-90 Challenge! Purchase a course, complete 90% in 90 days, and save 90% cost click here to explore. Last Updated : 08 Jul, 2021 Like Article Save Article Previous length vs length() in Java Next ixigo Interview Experience | For SDE2 Backend Share your thoughts in the comments Add Your Comment Please Login to comment...
