26 Answers · Method overloading. (String a, Integer b) · Nulls. To address the limitations of the previous approaches you can allow null values and then analyse ... ... <看更多>

Java does not offer default method parameters like many languages do. ... style default values by overloading the method foo with the following two methods:. ... <看更多>

The default value of the message paramater in the say() function is 'Hi' . In JavaScript, default function parameters allow you to initialize named ... ... <看更多>

We can specify default values for function and method parameters. If the user won't specify arguments for ... ... <看更多>

The default value for an uninitialized reference is null . ... Anytime you have a function that takes multiple distinct parameters of the same type (i.e. ... ... <看更多>