Is it possible to pass a dynamic number of arguments to Formatter.format( ) function? I want to pass as all Strings in a String array to format() function.
Something like this,
Formatter format;
format.format("FormatString" , "someString" , arrayOfString[0] , arrayOfString[1] , ... , arrayOfString[n] , "anotherString" );
Dynamic arguments are basically a form of syntactic sugar for passing an array of arguments to the function. Internally, the dynamic arguments are an array.
public Formatter format(String format, Object ... args)
Is basically the same as
public Formatter format(String format, Object[] args)
Except that in the former case, you don't have to build the array by hand, the compiler will do it for you. But it is still possible to pass an array of arguments, as if the method was written with the latter syntax.
So you can build your own array of dynamic arguments that contains all the arguments that you want to pass:
String[] arrayOfString;
Object[] arguments = new Object[arrayOfString.length + 2];
int argIndex = 0;
arguments[argIndex++] = "someString";
for (int i = 0; i < arrayOfString.length; i++) {
arguments[argIndex++] = arrayOfString[i];
}
arguments[argIndex++] = "anotherString";
Formatter formatter = new Formatter();
formatter.format("FormatString", arguments);
You can get away with this simply by using an Array stream:
Formatter formatter = new Formatter();
formatter.format(formatString, Arrays.stream(new Object[][]{array1, array2})
.flatMap(Arrays::stream).toArray());
