What is Error, Bug and Defec ?

What is Error, Bug and Defect in software testing ?

Error :- When developer compile a program and program compilation is failed due to some syntax problem or not used correct logic, is called an Error. 

For example:- 

public class

 {

public static void main( string []args)

{

s.o.p(" hello")

}

}

Now after running this program, we will get an error because there is syntax issues as we haven't use correct syntax to print output.

Bug : Bug is something that is not producing expected output or something is not behaving as expected.

 For example- Developer develop a program to add two number and that program is running fine but producing wrong result.

public class

 {

public static void main( string []args)

{

int a=3;

int b=2;

int s= ++a+b;

System.out.println(" hello");

}

}

Actual output: 6

Expected outpit: 5

So here system is not producing expected output after adding two number.

In simple term, when actual result is different than expected result is called bug.

Defect: When developer develop an application and assigned the build to tester to test and when tester found any gap in the application or actual result is differ from expected result is called defect.

Thanks for reading, please follow this page to more about software testing material.