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Which of the following is true about passing arguments by value in Java?
- a)The changes made to the passed argument within the method are reflected outside the method.
- b)Only primitive data types can be passed by value in Java.
- c)Objects are always passed by value in Java.
- d)Passing arguments by value means passing the actual memory address of the variable.
Correct answer is option 'C'. Can you explain this answer?
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Which of the following is true about passing arguments by value in Jav...
Understanding Passing Arguments by Value in Java
In Java, all arguments passed to methods are handled by value. This concept can sometimes be misunderstood, especially in the context of objects. Here’s a detailed explanation of why option 'C' is correct.
What Does "Passed by Value" Mean?
- Definition: "Passed by value" refers to the fact that a copy of the variable’s value is made when passed to a method.
- Primitive Data Types: For primitive types (int, char, etc.), the actual value is copied.
- Objects: For objects, the reference (memory address) to the object is copied, not the object itself.
Why Option 'C' is Correct
- Objects Are Passed by Value: In Java, when an object is passed to a method, a copy of the reference to that object is made. Therefore, changes made to the object's attributes within the method will affect the original object because both the original and the copied reference point to the same object in memory.
- Example: If you modify an object’s field inside a method, the changes will persist outside the method. However, if you reassign the reference to point to a new object, this change will not affect the original reference.
Why Other Options Are Incorrect
- Option A: Changes made to the argument within the method are reflected only if you modify the object itself, not if you reassign the reference.
- Option B: Both primitive data types and object references are passed by value in Java.
- Option D: Passing by value does not mean passing the actual memory address; it means passing a copy of the reference.
Understanding these distinctions helps clarify how Java handles method arguments and object manipulation.
In Java, all arguments passed to methods are handled by value. This concept can sometimes be misunderstood, especially in the context of objects. Here’s a detailed explanation of why option 'C' is correct.
What Does "Passed by Value" Mean?
- Definition: "Passed by value" refers to the fact that a copy of the variable’s value is made when passed to a method.
- Primitive Data Types: For primitive types (int, char, etc.), the actual value is copied.
- Objects: For objects, the reference (memory address) to the object is copied, not the object itself.
Why Option 'C' is Correct
- Objects Are Passed by Value: In Java, when an object is passed to a method, a copy of the reference to that object is made. Therefore, changes made to the object's attributes within the method will affect the original object because both the original and the copied reference point to the same object in memory.
- Example: If you modify an object’s field inside a method, the changes will persist outside the method. However, if you reassign the reference to point to a new object, this change will not affect the original reference.
Why Other Options Are Incorrect
- Option A: Changes made to the argument within the method are reflected only if you modify the object itself, not if you reassign the reference.
- Option B: Both primitive data types and object references are passed by value in Java.
- Option D: Passing by value does not mean passing the actual memory address; it means passing a copy of the reference.
Understanding these distinctions helps clarify how Java handles method arguments and object manipulation.
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Which of the following is true about passing arguments by value in Jav...
In Java, objects are always passed by value. When an object is passed as an argument to a method, a copy of the reference to the object is passed by value. This means that changes made to the object within the method are reflected outside the method.
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Which of the following is true about passing arguments by value in Java?a)The changes made to the passed argument within the method are reflected outside the method.b)Only primitive data types can be passed by value in Java.c)Objects are always passed by value in Java.d)Passing arguments by value means passing the actual memory address of the variable.Correct answer is option 'C'. Can you explain this answer?
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Which of the following is true about passing arguments by value in Java?a)The changes made to the passed argument within the method are reflected outside the method.b)Only primitive data types can be passed by value in Java.c)Objects are always passed by value in Java.d)Passing arguments by value means passing the actual memory address of the variable.Correct answer is option 'C'. Can you explain this answer? for EmSAT Achieve 2025 is part of EmSAT Achieve preparation. The Question and answers have been prepared according to the EmSAT Achieve exam syllabus. Information about Which of the following is true about passing arguments by value in Java?a)The changes made to the passed argument within the method are reflected outside the method.b)Only primitive data types can be passed by value in Java.c)Objects are always passed by value in Java.d)Passing arguments by value means passing the actual memory address of the variable.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for EmSAT Achieve 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is true about passing arguments by value in Java?a)The changes made to the passed argument within the method are reflected outside the method.b)Only primitive data types can be passed by value in Java.c)Objects are always passed by value in Java.d)Passing arguments by value means passing the actual memory address of the variable.Correct answer is option 'C'. Can you explain this answer?.
Which of the following is true about passing arguments by value in Java?a)The changes made to the passed argument within the method are reflected outside the method.b)Only primitive data types can be passed by value in Java.c)Objects are always passed by value in Java.d)Passing arguments by value means passing the actual memory address of the variable.Correct answer is option 'C'. Can you explain this answer? for EmSAT Achieve 2025 is part of EmSAT Achieve preparation. The Question and answers have been prepared according to the EmSAT Achieve exam syllabus. Information about Which of the following is true about passing arguments by value in Java?a)The changes made to the passed argument within the method are reflected outside the method.b)Only primitive data types can be passed by value in Java.c)Objects are always passed by value in Java.d)Passing arguments by value means passing the actual memory address of the variable.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for EmSAT Achieve 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is true about passing arguments by value in Java?a)The changes made to the passed argument within the method are reflected outside the method.b)Only primitive data types can be passed by value in Java.c)Objects are always passed by value in Java.d)Passing arguments by value means passing the actual memory address of the variable.Correct answer is option 'C'. Can you explain this answer?.
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