- Functional Interface:
- This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
Interface for executing code with arguments that returns a value.
A CallableArgsReturns object can be constructed inside an object's methods
so that otherwise hidden fields and methods are
accessible. For example
Map<String, CallableArgsReturns<Integer,Integer>> table = ...;
void foo(final int i) {
CallableArgsReturns<Integer> callable
= new CallableArgsReturns<Integer,Integer>() {
public Integer call(Integer... args) {
int j = (args.length == 0)? 0: args[0];
return Integer.valueOf(i + j);
}
};
table.put("foo", callable);
}
void bar(int j) {
System.out.println(table.get("foo").call(Integer.valueOf(j)));
}
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Method Summary
-
Method Details
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call
The method to call.- Parameters:
args
- additional arguments supplied by the caller when this method is called- Returns:
- an object of type T providing the results of the call
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