PPT Slide

Also . . .

One cannot change contents of a String object. (We say: “Strings are immutable”.)

You may think you are modifying a String. But, what happens

in memory is:

* a new String is created

* your old String may be ‘garbage collected’; you no longer

have a reference to the old String

For example:

Hello World

str1

String str1 = “Hello World”

str1 = str1.substring(4)

Hello World

o World

str1

Strings vis-a-vis Objects

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