这里我有两个hashmaps dataz
和screen_dataz
。我想将screen_dataz
复制到dataz
。如何将一个hashmap内容复制到另一个hashmap
我想是这样,但它不工作:
Object[] obj = new Object[5];
String[] strArray = new String[]{"Obj1","Array1","Converted1","To1","List1"};
String[] strArray1 = new String[]{"Obj2","Array2","Converted2","To2","List2"};
dataz.put(0,(Object[]) strArray);
dataz.put(1,(Object[]) strArray1);
// String dataString = (String) dataz;
System.out.println(dataz);
Object[] obj1= new Object[5];
String[] strArray2 = new String[]{"Obj3","Array3","Converted3","To3","List3"};
String[] strArray3 = new String[]{"Obj4","Array4","Converted4","To4","List4"};
screen_dataz.put(0,(Object[]) strArray2);
screen_dataz.put(1,(Object[]) strArray3);
System.out.println("copying screen dataz to dataz");
dataz.putAll(screen_dataz);
请出示'dataz'和'screen_dataz'的定义和解释你的意思是“它不工作”。 –
对,直到我们定义了'dataz',下面的几个答案可能是错误的! –