call by value是针对基本数据类型而言的;call by reference是针对引用类型而言的。 ----------------------------------------------------------------------- User user = new User(); user.setUsername(); 这种调用方法方式称为call by reference(通过引用来调用) ------------------------------------------------------------------------ int a, b = 10, c = 20; a = b + c; System.out.println(a); 这种方法是call by value(通过值来调用)
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User user = new User();
user.setUsername(); 这种调用方法方式称为call by reference(通过引用来调用)
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int a, b = 10, c = 20;
a = b + c;
System.out.println(a);
这种方法是call by value(通过值来调用)