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What is the purpose of the 'this' keyword in Java?
- a)It is used to refer to the current instance of a class.
- b)It is used to create an object of a class.
- c)It is used to access static variables and methods.
- d)It is used to access superclass members.
Correct answer is option 'A'. Can you explain this answer?
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What is the purpose of the this keyword in Java?a)It is used to refer ...
The 'this' keyword in Java is used to refer to the current instance of a class. It is typically used to distinguish between instance variables and method parameters/ local variables with the same name.
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What is the purpose of the this keyword in Java?a)It is used to refer ...
Explanation:
Using 'this' keyword in Java:
- In Java, the 'this' keyword is used to refer to the current instance of a class.
- It can be used to access instance variables and methods of the current object.
Example:
```java
public class Person {
String name;
public Person(String name) {
this.name = name; // 'this' is used to refer to the instance variable 'name'
}
public void printName() {
System.out.println("Name: " + this.name); // 'this' is used to access the instance variable 'name'
}
}
```
Benefits of using 'this' keyword:
- Helps in differentiating between instance variables and local variables with the same name.
- Makes the code more readable and understandable.
Conclusion:
The 'this' keyword in Java is essential for referring to the current instance of a class and accessing its instance variables and methods. It plays a crucial role in ensuring clarity and readability in object-oriented programming.
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What is the purpose of the this keyword in Java?a)It is used to refer to the current instance of a class.b)It is used to create an object of a class.c)It is used to access static variables and methods.d)It is used to access superclass members.Correct answer is option 'A'. Can you explain this answer?
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