從陣列

Question

我想創造一些陣列3周的ArrayList像下面創建的ArrayList

public static ArrayList<Double[]>[] hexpos = (ArrayList<Double[]>[])new ArrayList[3]; 


     for (int i = 0; i < 3; i++) 
     hexpos[ i ] = new ArrayList<Double[]>(); 

// ====== ==============初始arraylist1

 Double[] t = new Double[2]; 
    t[0]=x; 
    t[1]=y; 
    hexpos[0].add(t); 
    System.out.println("xtest"+ hexpos[0].get(0)[0]); 
    System.out.println("ytest"+ hexpos[0].get(0)[1]); 

// ========================初始arraylist2

 int count=1;  
    t = new Double[2]; 
    t[0]=x; 
    t[1]=y-(2*r); 
    hexpos[count].add(t); 

    t = new Double[2]; 
    t[0]=x+(3*s/2); 
    t[1]=y-r; 
    hexpos[count].add(t); 

    t = new Double[2]; 
    t[0]=x+(3*s/2); 
    t[1]=y+r; 
    hexpos[count].add(t); 
    count++; 

// ========================初始arraylist3

t = new Double[2]; 
    t[0]=x; 
    t[1]=y-(4*r); 
    hexpos[count].add(t); 

    t = new Double[2]; 
    t[0]=x+(3*s/2); 
    t[1]=y-(3*r); 
    hexpos[count].add(t); 


    t = new Double[2]; 
    t[0]=x+(3*s); 
    t[1]=y-(2*r); 
    hexpos[count].add(t); 


    t = new Double[2]; 
    t[0]=x+(3*s); 
    t[1]=y; 
    hexpos[count].add(t); 

我剛打印出來的第一數組列表作爲一個例子： 輸出結果爲： xtest 400 ytest 400 xtest 400 ytest 400 xtest 400 ytest 400 問題是爲什麼它重複3次!!!

Answer 1

嘗試​​

String arr1[] = {"111","poo","cfggg"}; 
String arr2[] = {"vfv","poc","cdegg"}; 

ArrayList<String> arrayList1 = new ArrayList<String>(); 
arrayList1.addAll(Arrays.asList(arr1)); 

ArrayList<String> arrayList2 = new ArrayList<String>(); 
arrayList2.addAll(Arrays.asList(arr2)); 

System.out.println(arrayList1); 
System.out.println(arrayList2);