Related InterviewSolutions

• Can You Identify The Errors In The Below Code? Interface I { Class C Implements I { Public Void Method(int I) { System.out.println(i); } } Void Method(int I); }
• What Will Be The Output Of The Following Program? Class A { } Class B Extends A { } Class C Extends B { } Interface Abc { Void Method(a A); } Interface Pqr { Void Method(b B); } Class M Implements Abc, Pqr { Public Void Method(a A) { System.out.println(2); } Public Void Method(b B) { System.out.println(3); } } Public Class Mainclass { Public Static Void Main(string[] Args) { M M = New M(); M.method(new A()); M.method(new B()); M.method(new C()); } }
• Is The Below Program Written Correctly? If Yes, What Will Be The Output? Interface I { Class C { Int I; Public C(int I) { This.i = ++i; } Int Methodc() { Return ++i; } } } Public Class Mainclass { Public Static Void Main(string[] Args) { I.c C = New I.c(000); System.out.println(c.method()); } }
• What Will Be The Output Of The Following Program? Abstract Class A { Abstract Void Mymethod(number N); } Interface B { Abstract Void Mymethod(object O); } Class C Extends A Implements B { Void Mymethod(number N) { System.out.println("number"); } Public Void Mymethod(object O) { System.out.println("object"); } } Public Class Mainclass { Public Static Void Main(string[] Args) { A A = New C(); A.mymethod(new Integer(121)); B B = New C(); B.mymethod(new Integer(121)); C C = New C(); C.mymethod(new Integer(121)); } }
• Can We Define Interface As Generic?
• Can You Identify The Error In The Below Code? Interface X { Void Methodx(); } Interface Y Extends X { Void Methody(); } Class Z Implements Y { Public Void Methody() { System.out.println("method Y"); } }
• Interfaces Are Abstract And Public By Default. True Or False?
• Can You Identify The Error In The Below Code? Class A Implements A.b { Static Interface B { Void Methodb(); } }
• Is The Below Program Written Correctly? If Yes, What Will Be The Output? Interface X { Void Methodx(); Interface Y { Void Method(); } } Class Z Implements X, X.y { { Method(); System.out.println(1); } Public Void Methodx() { Methody(); System.out.println(2); } Public Void Methody() { System.out.println(3); } } Public Class Mainclass { Public Static Void Main(string[] Args) { Z Z = New Z(); Z.methodx(); Z.methody(); X X = Z; X.methodx(); } }
• What Will Be The Output Of The Following Program? Interface A { String A = "aaa"; String Methoda(); } Interface B { String B = "bbb"; String Methodb(); } Class C Implements A, B { Public String Methoda() { Return A+b; } Public String Methodb() { Return B+a; } } Class D Extends C Implements A, B { String D = "ddd"; Public String Methoda() { Return D+methodb(); } } Public Class Mainclass { Public Static Void Main(string[] Args) { C C = New C(); System.out.println(c.methoda()); System.out.println(c.methodb()); C = New D(); System.out.println(c.methoda()); System.out.println(c.methodb()); } }