A char is a single character. A String is a collection of characters. It may be empty (zero characters), have one character, two character, or many characters - even a fairly long text.
The single quote (') is used to deliniate a character during assignment:
char someChar = 'a';
The double quote (") is used to delineate a string during assignment:
String someString = new String("hello there");
Note that char is a primitive data type in Java, while String is an Object. You CANNOT directly assign a char to a String (or vice versa). There is, however, a Character object that wraps the char primitive type, and Java allows method calls to be made on the char primitive (automagically converting the char to Character before doing so).
i.e. these ALL FAIL:
someString = SomeChar;
someString = new String(someChar);
However, these WILL work:
someString = Character.toString(someChar);
someString = someChar.toString();
Also note that a String is a static memory allocation, while a character's is dynamic. By that, I mean that when a String is created, it is allocated a memory location exactly big enough to fit the assigned string. Any change to that String forces and entirely new memory location to be allocated, the contents of the old String copied in (with the appropriate changes), and the old String object subject to garbage collection. Thus, making changes to a String object are quite inefficient (if you want that kind of behaviour, use StringBuffer instead).
A character is allocated but once; all subsequent changes to a character variable simply overwrite that same memory location, so frequent changes to a character variable incur no real penalty.
The 'string' (more correctly 'char') type in C and C++ is a single scalar variable that can hold one character in the host's character set. The c-type string is an array of 'char' types. In this context, the array is of fixed size, and you need to provide code to manipulate it.
In C++, you can have classes, and you can have a 'string' class, or type. In this context, you can have automatic allocation/deallocation, expansion/contraction, and manipulation provided by the class.
Strings "like this" are constant character-array literals, so they can be used as 'char *' or 'char []' values, but they cannot be modified.
Even in languages where string is a type, it is still an array of characters. A computer can not represent a string as a primitive type. That said, the difference between using the programming language string object or an array or list if characters will differ based on language. Though in most languages which offer a string type, it would mean that you'd have to implement all the functions provided for you by the type on your own. A string object class simply provides a series of utility functions to manipulate a character array within.
Yes you can store non primitive data type variables in an array. String is a non primitive data type. You can declare a string array as: String a[]=new String[10];
String - is primitive data typestring - is user defined data type
A string is a collection of words or characters in '' or "" it is also a data type.
In C programming, a string doesn't have a specific return type as it's essentially an array of characters. So, if a function is returning a string, it should be declared to return a pointer to a char (char*), since a string in C is represented as an array of characters terminated by a null character ('\0').
The difference between the two keywords is that CTypesucceeds as long as there is a valid conversion defined between the expression and the type, whereas DirectCast requires the run-time type of an object variable to be the same as the specified type. If the specified type and the run-time type of the expression are the same, however, the run-time performance of DirectCast is better than that of CType.
Even in languages where string is a type, it is still an array of characters. A computer can not represent a string as a primitive type. That said, the difference between using the programming language string object or an array or list if characters will differ based on language. Though in most languages which offer a string type, it would mean that you'd have to implement all the functions provided for you by the type on your own. A string object class simply provides a series of utility functions to manipulate a character array within.
3 differences.................. 1. length wise.... 2.initialization 3. null terminated length of char array is differ from string........ initialization of string is differ from char....... and string is null terminated...........
String is not primitive data. Only char,int,double,and boolean are!
Yes you can store non primitive data type variables in an array. String is a non primitive data type. You can declare a string array as: String a[]=new String[10];
Type 8 cotton string works good, and it can be colored to if you want.
A string is a collection of words or characters in '' or "" it is also a data type.
The collective noun for 'string' is a ball of string.The noun 'string' is a standard collective noun for:a string of ducksa string of horsesa string of mulesa string of pearlsa string of poniesa string of racehorsesa string of violinists
String - is primitive data typestring - is user defined data type
A string is a collection of words or characters in '' or "" it is also a data type.
Here's the description given by the experts at CoinFacts.com:Type 1 - last feather on the Indian's headdress points between the I and the CType 2 - last feather on the Indian's headdress points between the C and the A
In C programming, a string doesn't have a specific return type as it's essentially an array of characters. So, if a function is returning a string, it should be declared to return a pointer to a char (char*), since a string in C is represented as an array of characters terminated by a null character ('\0').