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- FileReader (java.io)
A specialized Reader that reads from a file in the file system. All read
requests made by calling me
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- SortedMap (java.util)
A map that has its keys ordered. The sorting is according to either the natural
ordering of its keys
- Cipher (javax.crypto)
This class provides access to implementations of cryptographic ciphers for
encryption and decryption
- Graphics2D (java.awt)
This Graphics2D class extends the Graphics class to provide more sophisticated
control overgraphics
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The GridLayout class is a layout manager that lays out a container's components
in a rectangular gri
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