4) Which of the following codes is/are valid? Code 1: abstract class X { abstract void func1(); abstract void func2() {} } Code 2: abstract class X { abstract void func1(); void func2() {} } a. Code 1 is valid b. Code 2 is valid c. Both codes are valid d. Both codes are invalid

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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4) Which of the following codes is/are valid?
Code 1:
abstract class X
{
abstract void func1();
abstract void func2() {}
}
Code 2:
abstract class X
{
abstract void func1();
void func2() {}
}
a. Code 1 is valid
b. Code 2 is valid
c. Both codes are valid
d. Both codes are invalid
Transcribed Image Text:4) Which of the following codes is/are valid? Code 1: abstract class X { abstract void func1(); abstract void func2() {} } Code 2: abstract class X { abstract void func1(); void func2() {} } a. Code 1 is valid b. Code 2 is valid c. Both codes are valid d. Both codes are invalid
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