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adding values to the arraylist from userinput dynamically

How can we add the data to java objects dynamically by taking the input from user? without using database is that possible? if possible how ? show with small example thanks in advance

Button button=(Button)findViewById(R.id.myButton);
EditText myText=(EditText)findViewById(R.id.myEditText);
button.setOnClickListener(new OnClickListener(){public void onClick(View v){
myArrayList.add(myText.getText().toString());

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