Sunday, 11 August 2013
JAVA: Keyword: abstract
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abstract: |
When a class contains any abstract method, it must be declared as abstract.
An abstract class cannot be
final.An abstract method cannot be
final, static nor native.
Code:
package com.interview.question.java;
abstract class SampleAbstractClass {
/**
*
* Sample abstract class.
*
* @author http://interviewquestionjava.blogspot.com
*
*/
// Sample abstract method.
public abstract void sampleabstractmethod() ;
public void sampleNormalMethod(){
System.out.println("SampleAbstractClass.sampleNormalMethod()");
}
}
public class TestAbstractClass{
/**
*
* Sample class to call SampleAbstractClass.
*
* @author http://interviewquestionjava.blogspot.com
*
*/
public static void main(String[] args) {
SampleAbstractClass objSampleAbstractClass = newSampleAbstractClass() {
@Override
public void sampleabstractmethod() {
System.out
.println("TestAbstractClass.main(...).new SampleAbstractClass() {...}.sampleabstractmethod()");
}
};
objSampleAbstractClass.sampleabstractmethod();
}
}
Output:
TestAbstractClass.main(...).new SampleAbstractClass() {...}.sampleabstractmethod()
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6 Responses to “ JAVA: Keyword: abstract ”
1 September 2013 at 15:20
When a class is declared as an abstract, the class should have at least one abstract method.
I think this statement is WRONG..
6 September 2014 at 21:27
I like it thanks for sharing such a brilliant information, great blog
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8 August 2020 at 21:52
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5 August 2022 at 13:00
This may be an issue with my internet browser because I’ve had this happen before.
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