數組和集合使用Groovy

Question

我想要實現這樣的事情在常規：

int arr[] = new int[2]; 
ArrayList<arr> al = new ArrayList<arr>(); 
for (3times) { 
    ar[0] = Value coming from db; 
    ar[1] = Value coming from db; 
    al.add(arr); 
} 
println al(1)(2) 

Answer 1

像這樣的東西應該這樣做：

def arr = [] 
def al = [] 
for (i in 1..3) { 
    arr = [] 
    arr[0] = 1 //some value 
    arr[1] = 2 //some value 
    al.add(arr) 
} 

println al[0][1]