What is the purpose of Java generics?Select one:a. To provide type safety at runtimeb. To improve performance of Java codec. To provide type safety at compile-timed. To make Java code more readable
Question
What is the purpose of Java generics?Select one:a. To provide type safety at runtimeb. To improve performance of Java codec. To provide type safety at compile-timed. To make Java code more readable
Solution 1
The purpose of Java generics is c. To provide type safety at compile-time.
Generics were added to Java to ensure type safety. They allow a type or method to operate on objects of various types while providing compile-time type safety. It is important to note that this type safety is ensured at compile time and not at runtime. This means that the type checking occurs when the code is compiled, and any type issues are flagged at that time. This helps in preventing ClassCastException at runtime.
Generics also make the code more readable by reducing the need for type casting and allowing programmers to check for type compatibility at compile time, making debugging easier. However, they do not inherently improve the performance of Java code.
Solution 2
The purpose of Java generics is c. To provide type safety at compile-time.
Generics were added to Java to ensure type safety. They allow a type or method to operate on objects of various types while providing compile-time type safety. It is important to note that this type safety is ensured at compile time, not at runtime. This means that the correctness of the type is checked when the code is compiled, not when it is run. This helps to prevent ClassCastException at runtime.
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
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
How can you achieve type safety when working with collections in Java?Question 11Answera.By using raw typesb.By using generic typesc.By using wildcard typesd.By using any data type
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