0
What are the constructors are used to create an object of the file class?
Wiki User
∙ 11y ago
There are three constructors that can be used to create a File class.
- public File(String path). 'path' is basically the full pathname to the file in your current directory.
- public File(String path, String name). You can also separate the path and filename. 'name' would represent the filename and 'path' would represent the name of the directory.
- public File(File directory, String name). This is somehow similar to the previous way; however, directory is a File object rather than a String object.
To create a new File object:
File newFile = new File("something");
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
How you can create an object of a class in java?
for creating objects use the new operator along with a call to the constructor. for ex Triangle t = new Triangle(); In this statement the new operator creates a triangle object and the constructor is called which initializes the object and then new returns a reference of the object which is stored in the reference var "t" of type Triangle.
Program in Java to create file and copy content of an existing file to it?
You need to use File class to create file in java and than Reader class implementation such as BufferedReder to read content.
Which method of object output streme class can be used to write the cotents of an object to a file?
write object
What are constructors and deconstructors in C programming language?
Constructors are functions that you use to define (initialize) the properties and methods of a class. By definition, constructors are functions within a class definition that have the same name as the class. For example, the following code defines a Circle class and implements a constructor function: // file Circle.as class Circle { private var circumference:Number; // constructor function Circle(radius:Number){ this.circumference = 2 * Math.PI * radius; } } The term constructor is also used when you create (instantiate) an object based on a particular class. The following statements are calls to the constructor functions for the built-in Array class and the custom Circle class: var my_array:Array = new Array(); var my_circle:Circle = new Circle(9);
What is serializable class in JAVA?
The serializable interface is used to perform the serialization action. Serialization is the process by which the contents of an object are written to any form of storage - say a flat file. This data stored in the flat file can be de-serialized at any time to create the object. Ex: public class Test implements Serializable { … //lots of code }
How you can create an object of a class in java?
for creating objects use the new operator along with a call to the constructor. for ex Triangle t = new Triangle(); In this statement the new operator creates a triangle object and the constructor is called which initializes the object and then new returns a reference of the object which is stored in the reference var "t" of type Triangle.
Program in Java to create file and copy content of an existing file to it?
You need to use File class to create file in java and than Reader class implementation such as BufferedReder to read content.
How do you create a simple student file in C Plus Plus?
Whenever you open a file using the function open of fstream class (header file) by using one of it's object you have created, the file is created automatically.You can do it this way:fstream filer;filer.open("Student.dat",ios::out);//This will create a file.This is just a code segment.
Which method of object output streme class can be used to write the cotents of an object to a file?
write object
How do you put a movie in to a word document?
Insert tab -Object - create from file , then navigate to that file
What are constructors and deconstructors in C programming language?
Constructors are functions that you use to define (initialize) the properties and methods of a class. By definition, constructors are functions within a class definition that have the same name as the class. For example, the following code defines a Circle class and implements a constructor function: // file Circle.as class Circle { private var circumference:Number; // constructor function Circle(radius:Number){ this.circumference = 2 * Math.PI * radius; } } The term constructor is also used when you create (instantiate) an object based on a particular class. The following statements are calls to the constructor functions for the built-in Array class and the custom Circle class: var my_array:Array = new Array(); var my_circle:Circle = new Circle(9);
What is the difference between an executable file and a .class file?
Both are binary files but the differences between those are:- 1) we can execute an executable file while we cannot execute an object file. 2) An object file is a file where compiler has not yet linked to the libraries, so you get an object file just before linking to the libraries, so still some of the symbols or function definitions are not yet resolved which are actually present in the libraries, and that's why we cannot execute it. Once an object file is linked with the library by the compiler, then all the symbols are resolved and we get an executable file which can be executed on the appropriate platform. So basically the difference is that we get an object file when we don't link with library while executable file is with the linking phase. In gcc we can direct compiler not to link with library and so it will prepare the object file :- gcc -c test.c It will automatically create test.o object file when you try to execute it like:- ./test.o cannot execute binary file
How is Java persistence done?
Java persistence is implemented using serialization. Serialization is a technique in java using which the contents of a java object (A class instance) can be written into a flat file. This value can be unserialized or deserialized at a later point of time to create the object. Any class that implements the Serializable interface can be serialized.
What is serializable class in JAVA?
The serializable interface is used to perform the serialization action. Serialization is the process by which the contents of an object are written to any form of storage - say a flat file. This data stored in the flat file can be de-serialized at any time to create the object. Ex: public class Test implements Serializable { … //lots of code }
What is a jar file in java?
The Java.io.File class is an abstract representation of file and directory pathnames. Following are the important points about File:Instances may or may not denote an actual file-system object such as a file or a directory. If it does denote such an object then that object resides in a partition. A partition is an operating system-specific portion of storage for a file system.A file system may implement restrictions to certain operations on the actual file-system object, such as reading, writing, and executing. These restrictions are collectively known as access permissions.Instances of the File class are immutable; that is, once created, the abstract pathname represented by a File object will never change.
Should the constructor name and class name be same?
Every class object is created using the same new keyword, so it must have information about the class to which it must create an object. For this reason, the constructor name should be the same as the class name. To learn more about data science please visit- Learnbay.co
How can i add an employee class and an account class to the console application projects?
You create a new file for each class, and define a class in each. In Java, you use the "class" keywoard.
