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Lesson 1 of 5 • 2 upvotes • 2:37mins

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Piyush Sahay

Java lang package include fundamental classes that design this Languages. This lesson introduces you the fundamental classes like object, class loader, thread class etc , string class is immutable so string buffer and builder are used to make changes in String . Number class include math class and character class includes escape sequence so all these are really useful and thus included in Java.lang.package

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