The initialization of a for
statement follows the rules for local variable declarations.
This would be legal (if silly):
for (int a = 0, b[] = { 1 }, c[][] = { { 1 }, { 2 } }; a < 10; a++) {
// something
}
But trying to declare the distinct Node
and int
types as you want is not legal for local variable declarations.
You can limit the scope of additional variables within methods by using a block like this:
{
int n = 0;
for (Object o = new Object();/* expr */;/* expr */) {
// do something
}
}
This ensures that you don't accidentally reuse the variable elsewhere in the method.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…