Java help needed for a code like Autocorrect

Question

I am writing a program which is the opposite of Auto Correct. The logic is that the user enters a sentence, when a button is pressed, the grammatical opposite of the sentence entered by the user should be displayed. I am roughly able to get the code. I used the matcher logic.But i am not able to get the desired output. I am linking the code with this question. Can anyone help me please?

imageButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String input = editText.getText().toString();
                String store = input;
                String store1 [] = store.split(" ");
                String correct[] = {"is","shall","this","can","will"};
                String wrong [] = {"was","should","that","could","would"};
                String output = "";
                for (int i=0;i<store1.length;i++) {
                    for(int j=0;j<correct.length;j++){
                        if(store1[i].matches(correct[j])) {
                            output = input.replace(store1[i], wrong[j]);


                            //store1[i] = wrong[j];
                        }
                        else
                        {
                            input.replace(store1[i], store1[i]);
                            //store1[i] = store1[i];
                        }

                    }
                mTextView.setText(output);

            }
        }});

Answer 1

By looking at your code, I've found some redundancy and unused variable. Shown as below.

 String store = input;
 String store1 [] = store.split(" ");

As shown below, I did some cleanup for you and implement your logic using Map interface. The wrong value must be the Key of the map so that we can easily determine is the word a wrong value using Map.containKeys(word). If key is found then we concatenate the output variable with the correct word.

    String input = editText.getText().toString().split(" ");

    Map<String, String> pairs = new HashMap<>();
    pairs.put("is", "was");
    pairs.put("shall", "should");
    pairs.put("this", "that");
    pairs.put("can", "could");
    pairs.put("will", "would");

    String output = "";

    for (String word : input) {
        if (pairs.containsKey(word)) {
            output = output + pairs.get(word) + " ";
        } else {
            output = output + word + " ";
        }
    }

    mTextView.setText(output.trim());