176. What Is The Difference Between The Size & Capacity Of A Vector?
Answer: The size is the number of elements actually stored in the vector, while capacity is the maximum number of elements it can store at a given instance of time.
177. Can A Vector Contain Heterogenous Objects?
Answer: Yes a Vector can contain heterogenous objects. Because a Vector stores everything in terms of Object.
178. What Is An Enumeration?
Answer: An enumeration is an interface containing methods for accessing the underlying data structure from which the enumeration is obtained. It allows sequential access to all the elements stored in the collection.
179. What Is Difference Between Path & Classpath?
Answer: Path and Classpath are operating system level environment variables. Path is defines where the system can find the executables. exe files and classpath is used to specify the location of .class files.
180. Can A Class Declared As Private Be Accessed Outside It's Package?
Answer: No, it's not possible to accessed outside it's package.
181. What Are The Restriction Imposed On A Static Method Or A Static Block Of Code?
Answer: A static method should not refer to instance variables without creating an instance and cannot use "this" operator to refer the instance.
182. What Is An Object's Lock & Which Object's Have Locks?
Answer: An object's lock is a mechanism that is used by multiple threads to obtain synchronized access to the object. A thread may execute a synchronized method of an object only after it has acquired the object's lock.
183. What Is The Difference Between Inner Class & Nested Class?
Answer: When a class is defined within a scope of another class, then it becomes inner class. If the access modifier of the inner class is static, then it becomes nested class.
184. What Restrictions Are Placed On Method Overriding?
Answer: Overridden methods must have the same name, argument list, and return type. The overriding method may not limit the access of the method it overrides.
185. What Will Be The Default Values Of All The Elements Of An Array Defined As An Instance Variable?
Answer: If the array is an array of primitive types, then all the elements of the array will be initialized to the default value corresponding to that primitive type.
Check Out Other Questions As Well: -
1. What Do You Know About Java?
2. What Are The Supported Platforms By Java Programming Language?
3. List Any Five Features Of Java?
4. Why Is Java Architectural Neutral?
5. How Java Enabled High Performance?
6. Why Java Is Considered Dynamic?
7. What Is Java Virtual Machine & How It Is Considered In Context Of Java’s Platform Independent Feature?
8. List Two Java IDE’s?
9. List Some Java Keywords Unlike C, C + + Keywords?
10.What Do You Mean By Object?
11. Define Class?
12. What Kind Of Variables A Class Can Consist Of?
13. What Is A Local Variable?
14. What Is A Instance Variable?
15. What Is A Class Variable?
16. What Is Singleton Class?
17. What Do You Mean By Constructor?
18. List The Three Steps For Creating An Object For A Class?
19. What Is The Default Value Of Byte Datatype In Java?
20. What Is The Default Value Of Float & Double Datatype In Java?
21. When A Byte Datatype Is Used?
22. What Is A Static Variable?
23. What Do You Mean By Access Modifier?
24. What Is Protected Access Modifier?
25. What Do You Mean By Synchronized Non Access Modifier?
...Return To Java FAQ's Section
Answer: The size is the number of elements actually stored in the vector, while capacity is the maximum number of elements it can store at a given instance of time.
177. Can A Vector Contain Heterogenous Objects?
Answer: Yes a Vector can contain heterogenous objects. Because a Vector stores everything in terms of Object.
178. What Is An Enumeration?
Answer: An enumeration is an interface containing methods for accessing the underlying data structure from which the enumeration is obtained. It allows sequential access to all the elements stored in the collection.
179. What Is Difference Between Path & Classpath?
Answer: Path and Classpath are operating system level environment variables. Path is defines where the system can find the executables. exe files and classpath is used to specify the location of .class files.
180. Can A Class Declared As Private Be Accessed Outside It's Package?
Answer: No, it's not possible to accessed outside it's package.
181. What Are The Restriction Imposed On A Static Method Or A Static Block Of Code?
Answer: A static method should not refer to instance variables without creating an instance and cannot use "this" operator to refer the instance.
182. What Is An Object's Lock & Which Object's Have Locks?
Answer: An object's lock is a mechanism that is used by multiple threads to obtain synchronized access to the object. A thread may execute a synchronized method of an object only after it has acquired the object's lock.
183. What Is The Difference Between Inner Class & Nested Class?
Answer: When a class is defined within a scope of another class, then it becomes inner class. If the access modifier of the inner class is static, then it becomes nested class.
184. What Restrictions Are Placed On Method Overriding?
Answer: Overridden methods must have the same name, argument list, and return type. The overriding method may not limit the access of the method it overrides.
185. What Will Be The Default Values Of All The Elements Of An Array Defined As An Instance Variable?
Answer: If the array is an array of primitive types, then all the elements of the array will be initialized to the default value corresponding to that primitive type.
Check Out Other Questions As Well: -
1. What Do You Know About Java?
2. What Are The Supported Platforms By Java Programming Language?
3. List Any Five Features Of Java?
4. Why Is Java Architectural Neutral?
5. How Java Enabled High Performance?
6. Why Java Is Considered Dynamic?
7. What Is Java Virtual Machine & How It Is Considered In Context Of Java’s Platform Independent Feature?
8. List Two Java IDE’s?
9. List Some Java Keywords Unlike C, C + + Keywords?
10.What Do You Mean By Object?
11. Define Class?
12. What Kind Of Variables A Class Can Consist Of?
13. What Is A Local Variable?
14. What Is A Instance Variable?
15. What Is A Class Variable?
16. What Is Singleton Class?
17. What Do You Mean By Constructor?
18. List The Three Steps For Creating An Object For A Class?
19. What Is The Default Value Of Byte Datatype In Java?
20. What Is The Default Value Of Float & Double Datatype In Java?
21. When A Byte Datatype Is Used?
22. What Is A Static Variable?
23. What Do You Mean By Access Modifier?
24. What Is Protected Access Modifier?
25. What Do You Mean By Synchronized Non Access Modifier?
...Return To Java FAQ's Section
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