Difference Between String And Stringbuffer In Java
distinguishing between String and StringBuffer in Java
Difference Between String And Stringbuffer In Java
In Java, a String is an immutable sequence of characters, meaning its value cannot be changed once it is created. Any operation that appears to modify a String actually creates a new String object. On the other hand, a StringBuffer is a mutable sequence of characters, allowing its value to be modified without creating a new object each time. This makes StringBuffer more efficient for scenarios where frequent modifications to the content of the string are needed, as it avoids unnecessary memory allocations and garbage collection overhead.
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1 - String in Java is immutable, meaning it cannot be changed once it is created. StringBuffer, on the other hand, is mutable and allows for modification of its contents.
2) When you modify a String object in Java, a new String object is created. This can impact performance and memory usage. StringBuffer is more efficient when working with large amounts of text that require frequent modifications.
3) String concatenation using the “+” operator in Java can create multiple String objects in the background, whereas StringBuffer's append() method efficiently appends new data to the existing content.
4) StringBuffers have several helpful methods for manipulation such as insert(), delete(), replace(), etc., which can be useful in various scenarios where you need to alter the content of the string.
5) StringBuffers are thread safe, meaning they can be shared among multiple threads without any issues related to concurrency. String, being immutable, is inherently thread safe but may not be as efficient in multi threaded environments.
6) StringBuffers have a larger memory footprint compared to Strings due to the additional overhead needed to support mutability. This is something to consider when optimizing memory usage in your Java application.
7) In general, if you need to perform a lot of string manipulations in your Java program, especially when the number of modifications is unknown or dynamic, using StringBuffer can lead to better performance and flexibility compared to repeatedly creating new String objects.
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