• 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

question on unicode

 
Greenhorn
Posts: 8
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
class JSC201 {
static byte m1() {
final char c = '\u0001';
return c; // 1
}
static byte m3(final char c) {return c;} // 2
public static void main(String[] args) {
char c = '\u0003';
System.out.print(""+m1()+m3(c));
}}

What is the result of attempting to compile and run the program?
a. Prints: 13
b. Prints: 4
c. Compile-time error at 1
d. Compile-time error at 2
e. Run-time error
f. None of the above
 
Ranch Hand
Posts: 3271
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
So what's your question? I assume you're quite capable of compiling and executing yourself, so what are you confused about?
 
Abacus White
Greenhorn
Posts: 8
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
f.java: In class `f':
f.java: In method `f.m1()':
f.java:33665: warning: Constant expression `0xfc00000003' too wide for narrowing primitive conversion to `byte'.
<<file too short - unexpected EOF>>


This is the outcome.I would like to know as to why this occured.
 
Corey McGlone
Ranch Hand
Posts: 3271
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hmmm...that is not the output I received. When trying to compile that, I got this:



That error makes perfect sense as you can't implictly cast a char to a byte as going from a char to a byte is a narrowing conversion.

I'm not sure why you're getting the error you are. What version of Java are you comiling on?
 
Abacus White
Greenhorn
Posts: 8
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
i'm using j2sdk1.4.1_01
 
I don't get it. A whale wearing overalls? How does that even work? It's like a tiny ad wearing overalls.
a bit of art, as a gift, that will fit in a stocking
https://gardener-gift.com
reply
    Bookmark Topic Watch Topic
  • New Topic