JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Java Integer Wrapper Class


Description:

The Integer class wraps a value of the primitive type int in an object.


List of Integer wrapper class programs:

  1. How to create int to Integer object?
  2. How to convert Integer to primitive types?
  3. How to get Integer maximum and minimum value?
  4. How to convert String to Integer value?
  5. How to convert String to signed decimal integer value?
  6. How to convert integer to binary value?
  7. How to convert integer to hexadecimal value?
  8. How to convert integer to octal value?
  9. How to convert binary value to integer value?
  10. How to convert hexadecimal value to integer value?
  11. How to convert octal value to integer value?
  12. How to convert string to integer using radix 27?
Knowledge Centre
What is abstract class or abstract method?
We cannot create instance for an abstract class. We can able to create instance for its subclass only. By specifying abstract keyword just before class, we can make a class as abstract class.

public abstract class MyAbstractClass{

}

Abstract class may or may not contains abstract methods. Abstract method is just method signature, it does not containes any implementation. Its subclass must provide implementation for abstract methods. Abstract methods are looks like as given below:

public abstract int getLength();
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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].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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