This week's book giveaway is in the JDBC and Relational Databases forum.
We're giving away four copies of Murach's MySQL and have Joel Murach on-line!
See this thread for details.
Win a copy of Murach's MySQL this week in the JDBC and Relational Databases forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

which method will be called

 
Greenhorn
Posts: 17
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi friends,
This is my first post! I was unable to find a good description of this topic in RH and Bill Brodgen's Exam Cram. Will the JLS be helpful ? Do you think we should study the JLS real well before taking the exam ?
Thanks,
Aruna
Please tell me What is the result of executing the following code:
class Test {
public static void main(String[] args) {
Test t = new Test();
t.test(1.0, 2L, 3);
}
void test(double a, double b, short c) {
System.out.println("1");
}
void test(float a, byte b, byte c) {
System.out.println("2");
}
void test(double a, double b, double c) {
System.out.println("3");
}
void test(int a, long b, int c) {
System.out.println("4");
}
void test(long a, long b, long c) {
System.out.println("5");
}
}
 
Greenhorn
Posts: 9
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
The test method is called with(1.0,2L,3) which is
(double,long,int)
Since there is no test method that exactly matches this it will select the one that will promote the parameters passed to the required values.
Hence it will call test(double,double,double)
Hence it will promote long and int to double.
It will print 3.
 
Ranch Hand
Posts: 3141
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Aruna,
You might want to read JLS§5.3 Method Invocation Conversion.
It doesn't hurt to through the JLS; it has a number of code examples that are worth working through.
Hope that helps.
------------------
Jane
The cure for boredom is curiosity.
There is no cure for curiosity.
-- Dorothy Parker
 
You've gotta fight it! Don't give in! Read this tiny ad:
a bit of art, as a gift, that will fit in a stocking
https://gardener-gift.com
reply
    Bookmark Topic Watch Topic
  • New Topic