Java strings are immutable, which means after you create a String OBJECT, you cannot change that object's contents. The Java designers found that most of the time, programmers do not need to change a string after it is created. By making String objects immutable, Java can provide better error protection and more efficient handling of strings. However, in CASE you do need to change the String, you can use a class called StringBuffer as a temporary "scratchpad" which you use to make changes. In short, your programs can change the String objects you store within a Stringbuffer and later copy the buffer's contents back to the String object after your alterations are complete.

In short, you should use String objects for "frozen" character strings whose contents you don't expect to change. In contrast, you should use the StringBuffer class for strings you expect to change in content or SIZE. Within your programs, you can take advantage of features from both classes because both provide methods to easily CONVERT between the two.

Java strings are immutable, which means after you create a String object, you cannot change that object's contents. The Java designers found that most of the time, programmers do not need to change a string after it is created. By making String objects immutable, Java can provide better error protection and more efficient handling of strings. However, in case you do need to change the String, you can use a class called StringBuffer as a temporary "scratchpad" which you use to make changes. In short, your programs can change the String objects you store within a Stringbuffer and later copy the buffer's contents back to the String object after your alterations are complete.

In short, you should use String objects for "frozen" character strings whose contents you don't expect to change. In contrast, you should use the StringBuffer class for strings you expect to change in content or size. Within your programs, you can take advantage of features from both classes because both provide methods to easily convert between the two.