What is the purpose of Java generics?Select one:a. To improve performance of Java codeb. To provide type safety at compile-timec. To make Java code more readabled. To provide type safety at runtime
Question
What is the purpose of Java generics?Select one:a. To improve performance of Java codeb. To provide type safety at compile-timec. To make Java code more readabled. To provide type safety at runtime
Solution
The purpose of Java generics is b. To provide type safety at compile-time.
Generics were added to Java to ensure type safety and to maintain type checking at compile time. They enable programmers to specify, with a single method declaration, a set of related methods or, with a single class declaration, a set of related types. This leads to a significant reduction in code and eliminates the need for programmers to manually cast class objects.
Similar Questions
Which of the following is NOT a benefit of using Java generics?Select one:a. Improved type safetyb. Better readabilityc. More efficient code executiond. Code reuse
Select the correct answerWhich of the following is an incorrect statement regarding the use of generics and parameterized types in Java?OptionsGenerics provide type safety by shifting more type checking responsibilities to the compilerWhen designing your own collections class (say, a linked list), generics and parameterized types allow you to achieve type safety with just a single class definition as opposed to defining multiple classesAll of the mentionedGenerics and parameterized types eliminate the need for down casts when using Java Collections
correct answerWhy are generics used?OptionsGenerics make code more fastGenerics add stability to your code by making more of your bugs detectable at compile timeGenerics make code more optimised and readableGenerics add stability to your code by making more of your bugs detectable at runtime
Which of the following statements about generics is true?Question 3Answera.Generics are only applicable to classes, not methods.b.Generics allow you to write type-safe code.c.Generics are optional in Java programming.d.Generics are limited to a single data type.
What is the significance of the term "Generic" in a class definition?Question 3Answera.It allows the class to accept any data typeb.It specifies a specific data type for the classc.It enforces type safety in the classd.It restricts the use of data types
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