6) what is the difference between string and stringbuffer

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Example Tutorial Difference between final, finally and finalize met Difference between static vs non static method in How to Create and Run a batch file in Windows -. How to setup Java Environment and run Java Program Pages Privacy Policy Terms and Conditions. Post a Comment Feel free to comment, ask questions if you have any doubt. Pages Home core java spring online courses thread java 8 coding sql books oop interview certification free resources best. Though all three classes StringBuffer , StringBuilder, and String are used for representing text data in Java there are some significant differences between them.

What this means is, you can add, remove or replace characters from StringBuffer and StringBuilder object but any change on the String object like converting uppercase to lowercase or appending a new character using String concatenation will always result in a new String object.

Another key difference between them is that both StringBuffer and String are thread-safe but StringBuilder is not thread-safe in Java. String achieves its thread-safety from Immutability but StringBuffer achieves it via synchronization, which is also the main difference between the StringBuffer and StringBuilder in Java.

String vs StringBuffer in Java One of the oldest question from Java interviews are What is the difference between String and StringBuffer, it's been asked from ages, I guess started as soon as Java was released in the 90s.

Let's first answer this question and then we will take a look at rather new StringBuilder vs String and StringBuffer vs StringBuilder questions. This proves that the String class overrides the hashCode method of the Object class. String literals are stored in a constant string pool, whereas StringBuffer objects are stored in a heap.

String class supports interning, i. We can convert the String object to the StringBuffer object by passing the String object to the StringBuffer class constructor, whereas to convert the StringBuffer object to the String object, we need to call the toString method. A new object is created when the value of the string changes. This is a guide to String vs StringBuffer. Here we discuss the String vs StringBuffer key differences with infographics and comparison table.

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