What difference that final
makes between the code below. Is there any advantage in declaring the arguments as final
.
public String changeTimezone( Timestamp stamp, Timezone fTz, Timezone toTz){
return ....
}
public String changeTimezone(final Timestamp stamp, final Timezone fTz,
final Timezone toTz){
return ....
}
As a formal method parameter is a local variable, you can access them from inner anonymous classes only if they are declared as final.
This saves you from declaring another local final variable in the method body:
void m(final int param) {
new Thread(new Runnable() {
public void run() {
System.err.println(param);
}
}).start();
}