是否可以检查任何输入，如果它与 if 条件中的字符串类型匹配以执行一堆代码？

Question

Mainly I was working with a code. where I am trying to get an input from a user in String type to execute some actions. If the user don't input any type of value it will give another message to him.

I was finding if it is possible to check that input equal to any String type! I was trying this!

    if (!(edt.getText().toString().equals("null"))) {

        txt.setText("Hello"+edt.getText().toString());
    }else{
        txt.setText("Wrong input");
    }

Answer 1

Maybe:

    txt.setText(getResponse(edt.getText().toString()));

// ...

private getResponse(String input) {
    if (input == null || input.isEmpty()) {
        return String.format("Hello %s", input);
    } else {
        return "Wrong input";
    }
}