gs gs111 Types of Classes (Using Java) - Generic Class - Quiz No.1
gs gs111 OOP Object Oriented Programming Java Quiz
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Question 1: What will be the output of the following Java code?
class Generic<T> { T t; Generic(T t) { this.t = t; } public T getT() { return this.t; } } class MainCall { public static void main (String[] args) { Generic <Integer> i = new Generic<Integer>(25); System.out.println(i.getT()); Generic <Double> j = new Generic<Double>(37); System.out.println(j.getT()); } }25 3725 37.0
Compilation Error
Runtime Error
Question 3: What will be the output of the following Java code?
class Generic<T,U> { T t; U u; Generic(T t, U u) { this.t = t; this.u = u; } public void append() { System.out.print(u); System.out.print(t); } } class GenericString { public static void main (String[] args) { Generic <String, String> i = new Generic<String, String>("San", "foundry"); i.append(); } }
Compilation Error
Runtime Error
NVAEducation
foundrySan
Question 4: What will be the output of the following Java code?
class Generic<T> { T t; Generic(T t) { this.t = t; } public T getT() { return this.t; } } class GenericString2 { public static void main (String[] args) { Generic <String> i = new Generic<String>("NVAEducation"); System.out.println(i.getClass()); System.out.println(i.getT().getClass()); } }class T class Genericclass Generic class String class Generic class java.lang.Stringclass T class java.lang.String
Question 5: What will be the output of the following Java code?
class Generic<T> { T t; Generic(T t) { this.t = t; } public T getT() { return this.t; } } class GenericInt { public static void main (String[] args) { Generic <Integer> i = new Generic<Integer>(100); Generic <Generic> j = new Generic<Generic>(i); System.out.println(j.getClass()); System.out.println(j.getT().getClass()); } }class Generic class Integerclass Generic class java.io.Integerclass Generic class java.lang.Integerclass Generic class Generic
Question 6: What will be the output of the following Java code?
class Generic<T> { T t; Generic(T t) { this.t = t; } public T getT() { return this.t; } } class GenericProg { public static void main (String[] args) { Generic <String> i = new Generic<String>("NVAEducation"); System.out.println(i); } }
Compilation Error
“NVAEducation”
Generic@2a139a55
GenericProg@2a139a55
Question 7: What will be the output of the following Java code?
class Generic <T> { Stack <T> t = new Stack <T>(); public void push(T i) { t.push(i); } public T pop() { return t.pop(); } public Stack Array() { return t; } } public class GenericPop { public static void main(String args[]) { Generic <String> i = new Generic<String>(); i.push("San"); i.push("foundry"); System.out.println(i.Array()); System.out.println(i.pop()); System.out.println(i.pop()); } }NVAEducation NVAEducation
Compilation Error
[San, foundry] San foundry[San, foundry] foundry San
Question 8: What will be the output of the following Java code?
class Generic <T> { Stack <T> t = new Stack <T>(); public void push(T i) { t.push(i); } public T pop() { return t.pop(); } } public class GenericStack { public static void main(String args[]) { Generic <String> i = new Generic<String>(); i.push("37"); i.push(37.0); System.out.println(i.pop()); System.out.println(i.pop()); } }37 37.0"37" 37.0
Runtime Error
Compilation Error
