Can I set the default arument value in Construct function something like ?
public class XLSReader {
public XLSReader(String filename="XYZ.xls") {
}
}
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3 Answers
No. Java doesn't support optional parameters. You can use overloading and chaining though:
public XlsReader() {
this("XYZ.xls");
}
public XlsReader(String filename) {
// Use filename here
}
(This applies to methods as well as constructors.)
Comments
No, you can't. Default parameter is not supported in Java.
answered Apr 27, 2012 at 11:58
Summer_More_More_Tea
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Comments
No you cannot but what you can do is to have 2 constructors like this:
public class XLSReader {
String filename;
// constructor with a filename argument
public XLSReader(String filename) {
this.filename = filename;
}
// default constructor will fill-in "default value" XYZ.xls
public XLSReader() {
this.filename = "XYZ.xls";
}
}
