Quick Answer: Can You Return A String In Java?

How do I return a string?

In order to do what you’re trying to do, you need to do one of the following:Allocate memory on the heap using malloc or similar, then return that pointer.

Allocate the string on the stack in the calling function (the one that will be using the string), and pass a pointer in to the function to put the string into..

What is the return type of string?

In your original method, you put the return type as void . With the return type as void, you cannot return the encrypted String . So it occurred to me that maybe you wanted to pass by reference and modify strTarget itself. To do this, instead of passing strTarget , you would pass a StringBuilder .

What does return 0 do in Java?

It is a keyword which is used to return some value, so it does not need any declaration.It needs only return keyword with value or variables. 4. Generally, return 0 is used to return exit code to the operating system. If we want to explicitly specify an exit code to the operating system, we have to use System.

Can you return nothing in Java?

In Java, a null value can be assigned to an object reference of any type to indicate that it points to nothing. The compiler assigns null to any uninitialized static and instance members of reference type. In the absence of a constructor, the getArticles() and getName() methods will return a null reference.

What is the return type of getchar ()?

The getchar() function obtains a character from stdin. It returns the character that was read in the form of an integer or EOF if an error occurs.

How do you return in Java?

whichever occurs first. You declare a method’s return type in its method declaration. Within the body of the method, you use the return statement to return the value. Any method declared void doesn’t return a value.

How do you return a message in Java?

Best way to return status flag and message from a method in JavaReturn a boolean, and pass in a StringBuilder to collect the message. This is the closest to a C-style way of doing it.Throw an exception instead of returning false, and include the message. … Create a new class called AuthenticationStatus with the boolean and the String. … Store the message in a member variable.

What is return type in Java?

In computer programming, the return type (or result type) defines and constrains the data type of the value returned from a subroutine or method. In many programming languages (especially statically-typed programming languages such as C, C++, Java) the return type must be explicitly specified when declaring a function.

How do I return a char pointer?

Or instead of char file[30]; do a dynamic memory allocation : char* file = malloc(30); then you can do return f; and it will work fine because f now is not a pointer to a local variable. file is a stack variable in ListFiles() and you’re returning a pointer to it.

What is the purpose of return in Java?

A return statement causes the program control to transfer back to the caller of a method. Every method in Java is declared with a return type and it is mandatory for all java methods. A return type may be a primitive type like int, float, double, a reference type or void type(returns nothing).

Is void a return type?

The void type, in several programming languages derived from C and Algol68, is the type for the result of a function that returns normally, but does not provide a result value to its caller. Usually such functions are called for their side effects, such as performing some task or writing to their output parameters.

What is Java void?

void is a Java keyword. Used at method declaration and definition to specify that the method does not return any type, the method returns void .

Can a function return a string?

Learn how to return a string from a C function The tricky thing is defining the return value type. Strings in C are arrays of char elements, so we can’t really return a string – we must return a pointer to the first element of the string. … Note that you can’t modify a string literal in C.

Is Boolean a return type in Java?

The boolean returned represents the value true if the string argument is not null and is equal, ignoring case, to the string “true”, otherwise return false.