When methods must share data, you can pass the data into and return the data out of methods. A method could be called using any numeric value as an argument, whether it is a variable, a named constant, or a literal constant.
A method's return type is part of its signature. According to Oracle, the method signature consists of the name and parameter types. Therefore, all the other elements of the method's declaration, such as modifiers, return type, parameter names, exception list, and body are not part of the signature.
The current methods are called halts. The arguments of the newly called method are pushed to the stack. The method code runs. After the method finishes running, the stack is again emptied and the old stack contents is again restored.
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