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What is string class constructors?

Anonymous

∙ 8y ago

Updated: 10/19/2022

Hello friends...

The String class supports several constructors. To create an empty String, you call the default constructor.

For example,

String s = new String();

Thank you

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Wiki User

∙ 8y ago

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Continue Learning about Engineering

How many constructors does class Exception have?

The Exception class has 4 constructors. They are: a. Exception() b. Exception(String arg) c. Exception(String arg, Throwable arg1) d. Exception(Throwable arg)

How many constructors are there for the string class?

The String class has multiple Constructors. Some of them are: 1. String - new String(String val) 2. Character Array - new String(char[] array) 3. Character Array with index positions - new String(char[] array. int start, int end)

How many constructors does the StringTokenizer class have?

As of Java 1.6 it has 3: StringTokenizer(String str) StringTokenizer(String str, String delim) StringTokenizer(String str, String delim, boolean returnDelims)

How can you identify a constructor from among any other methods in a class?

Constructors have the same identifier as that of the class, so if the name of your class is Book then your constructor must also be named Book. Constructors have no return type, not even void.

What are the constructors are used to create an object of the file class?

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");

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Related Questions

How many constructors does class Exception have?

The Exception class has 4 constructors. They are: a. Exception() b. Exception(String arg) c. Exception(String arg, Throwable arg1) d. Exception(Throwable arg)

How many constructors are there for the string class?

The String class has multiple Constructors. Some of them are: 1. String - new String(String val) 2. Character Array - new String(char[] array) 3. Character Array with index positions - new String(char[] array. int start, int end)

How many constructors does the StringTokenizer class have?

As of Java 1.6 it has 3: StringTokenizer(String str) StringTokenizer(String str, String delim) StringTokenizer(String str, String delim, boolean returnDelims)

What is a sample of multiple constructor in a single class?

public class Test { public Test() { â€¦ } public Test(int i) { â€¦ } public Test(String s) { â€¦ } } In the above example we have three constructors for the class Test. One of them has no arguments, one has an integer argument and one has a string argument. This is how multiple constructors are organized inside a class.

For what purpose constructors are used in Java?

Constructors are used to create the instance of a class.

What is the order of constructors and destructors of object?

The order of constructors is determined by the sequence they are called in the code, starting with the base class constructor and moving to the derived class constructor. Destructors are called in the reverse order of constructors, starting with the derived class destructor and moving to the base class destructor.

How can you identify a constructor from among any other methods in a class?

Constructors have the same identifier as that of the class, so if the name of your class is Book then your constructor must also be named Book. Constructors have no return type, not even void.

What are the different types of constructor in java?

Every class, including abstract classes, MUST have a constructor. Hard Code that into your brain. But just because a class must have one, doesn't mean the programmer has to type it. A constructor looks like this: class Car { Car() { } // The constructor for the Car class } You notice anything missing in the declaration above? There's no return type! Two key points to remember about constructors are that they have no return type and their names must exactly match the class name. Typically, constructors are used to initialize instance variable state, as follows: class Car { int size; String name; Car(String name, int size) { this.name = name; this.size = size; } } The two types of constructors are: default or no-arg constructor and constructor with args.

What are the different types of constructor java?

Every class, including abstract classes, MUST have a constructor. Hard Code that into your brain. But just because a class must have one, doesn't mean the programmer has to type it. A constructor looks like this: class Car { Car() { } // The constructor for the Car class } You notice anything missing in the declaration above? There's no return type! Two key points to remember about constructors are that they have no return type and their names must exactly match the class name. Typically, constructors are used to initialize instance variable state, as follows: class Car { int size; String name; Car(String name, int size) { this.name = name; this.size = size; } } The two types of constructors are: default or no-arg constructor and constructor with args.

Why you use constructors?

To create an instance of the class that implementing that constructor

What are different type of constructor in java?

Every class, including abstract classes, MUST have a constructor. The different types are: a. Regular constructors b. Overloaded constructors and c. Private constructors

What is main advantage of using constructors in java?

Constructors have the same name as the class itself and they do not specify a return type, not even void because they return the instance of the class itself. Because constructors have the same name as the class then they allow method overloading and also save memory and execution time of program. Program release memory of constructors function after using this function and it reduce program complexity.

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