I have two overloaded methods with varargs int and long. When I run a test passing integer it seems to prefer the varargs long method. Whereas, if I make the methods static and run with an integer it seems to prefer the varargs int method. What's going on here?
void varargs(int... i){
System.out.println("Inside int varargs");
for(int x : i)
System.out.println(x);
}
void varagrs(long... l){
System.out.println("Inside long varargs");
for(long x : l)
System.out.println(x);
}
static void staticvarargs(int...i)
{
System.out.println("Inside static int varargs");
for(int x : i)
System.out.println(x);
}
static void staticvarargs(long...l)
{
System.out.println("Inside static long varargs");
for(long x : l)
System.out.println(x);
}
public static void main(String args[]){
VarArgs va = new VarArgs();
va.varagrs(1);
staticvarargs(1);
}
Output:
Inside long varargs 1
Inside static int varargs 1
EDIT: I should've chosen better method names. There was a typo varargs, varagrs. Thanks zhong.j.yu for pointing that out.
Corrected code and expected behavior:
void varargs(int... i){
System.out.println("Inside int varargs");
for(int x : i)
System.out.println(x);
}
void varargs(long... l){
System.out.println("Inside long varargs");
for(long x : l)
System.out.println(x);
}
static void staticvarargs(int...i)
{
System.out.println("Inside static int varargs");
for(int x : i)
System.out.println(x);
}
static void staticvarargs(long...l)
{
System.out.println("Inside static long varargs");
for(long x : l)
System.out.println(x);
}
public static void main(String args[]){
VarArgs va = new VarArgs();
va.varargs(1);
staticvarargs(1);
}
Output:
Inside int varargs 1
Inside static int varargs 1
It's a typo
void varagrs(long... l){
^^
That's why it's nice to have an IDE with spell checking (eg IntelliJ)
After fixing the typo, the compiler chooses (int...)
over (long...)
because int
is a subtype of long
(4.10.1) , so the 1st method is more specific (15.12.2.5) . Note though int[]
is not a subtype of long[]
(4.10.3) .
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