JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Java String Examples

  • The String class is immutable (constant), i.e. Strings in java, once created and initialized, cannot be changed.
  • The String is a final class, no other class can extend it, and you cannot change the state of the string.
  • String values cannot be compare with '==', for string value comparision, use equals() method.
  • String class supports various methods, including comparing strings, extracting substrings, searching characters & substrings, converting into either lower case or upper case, etc.
  • The string examples given below describes more on string functionlaity.

String Sample Code Examples

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Difference between Enumeration and Iterator
The functionality of Enumeration and the Iterator are same. You can get remove() from Iterator to remove an element, while while Enumeration does not have remove() method. Using Enumeration you can only traverse and fetch the objects, where as using Iterator we can also add and remove the objects. So Iterator can be useful if you want to manipulate the list and Enumeration is for read-only access.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected] or you can comment on the page.

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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