If you would like to "jump" out of myMethod's body, use return; The compiler does not allow writing return void; ("illegal start of expression") or return doSomething(); ("cannot return a value from method whose result type is void"). In an application, this approach may be used to print runtime specific messages on the console for example. public. Thread Class void interrupt() This method is available in package java.lang.Thread.interrupt(). The reason the code will not work without void is because the System.out.println(String string) method returns nothing and just prints the supplied arguments to the standard out terminal, which is the computer monitor in most cases. Submitted by Preeti Jain, on July 24, 2019 . System.out.println( "Password: " + password); // Return if our password is long enough. "Returning void" means returning nothing. When a method returns "nothing" you have to specify that by putting the void keyword in its signature.. You can see the documentation of the System.out.println here: ; This method is used to interrupt the thread. Void has some nuances to it that we will discuss in later episodes. Thread Class public void start() This method is available in package java.lang.Thread.start(). Submitted by Preeti Jain, on July 29, 2019 . Let’s look at the java main method closely and try to understand each of its parts. In this tutorial we discuss void and return methods in Java in the broadest sense. If you want to create a method, you must have a return type. ; When we call start() method with thread object then it means the thread will start its execution. Java Thread Class public void start() method: Here, we are going to learn about the public void start() method of Thread class with its syntax and example. The constructor specifically has no return type. Therefore, the only value we can assign to a Void variable is null.It may seem a little bit useless, but we'll now see when and how to use this type. The "void" return type means that this method doesn't have a return type. Java program that uses return statement, void method public class Program { static void displayPassword(String password) { // Write the password to the console. instead of void , and use the return keyword inside the method: It should be after the access modifier and before the method name.. For clarifications, void is a return type that indicates that your method isn't required to return a data. This is the access modifier of the main method. It's not instantiable as its only constructor is private. Java File Class void deleteOnExit() method: Here, we are going to learn about the void deleteOnExit() method of File class with its syntax and example. Before generics, it was created for the reflection API, to hold TYPE returned by Method.getReturnType() for a void method, corresponding to the other primitive type classes. It actually doesn't need one because you "print" your String onto the System's output stream. Submitted by Preeti Jain, on July 16, 2019 File Class void deleteOnExit() This method is available in package java.io.File.deleteOnExit(). If you want the method to return a value, you can use a primitive data type (such as int , char , etc.) While void doesn't return a value in the strictest sense of the word, it is still considered a return type. The void keyword, used in the examples above, indicates that the method should not return a value. Or you could just remove the void. It has to be public so that java runtime can execute this method. Java Thread Class void interrupt() method: Here, we are going to learn about the void interrupt() method of Thread class with its syntax and example. Since JDK 1.1, Java provides us with the Void type.Its purpose is simply to represent the void return type as a class and contain a Class public value. 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