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Mobile Testing:java_lang_ArrayStoreException

Last Updated:Feb 28, 2022

Problem description

This exception occurs when you add objects of an incompatible type to an Object[] array.

Solution

This exception occurs when you add objects of an incompatible type to an Object[] array. We recommend that you modify the object type based on the stack information.

Sample code

class Father{}
class Son extends Father{}
... ...
public void handleArrayStoreException(){
      Father[] fathers=new Son[3];
      // The exception is thrown here.
      try {
        // Parent-class objects cannot be saved and the child-class objects can be saved.
      fathers[0]=new Father();
    } catch (ArrayStoreException e) {
      e.printStackTrace();
    }
      // Correct code
      Father father=new Father();
      Son son=new Son();
      if(son instanceof Son){
          // Objects can be added to the array.
        fathers[1]=son;
      }
      if(father instanceof Son){
            // Objects cannot be added to the array.
        fathers[2]=father;
      }
    }

References