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How to find edit text values start from consonant or not?

This example demonstrate about How to find edit text values start from consonant or not.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:hint="Enter something"
      android:layout_height="wrap_content" />
      android:layout_height="wrap_content" />

In the above code, we have taken edit text and button view to verify edit text data is starting with a consonant.

Step 3− Add the following code to java/MainActivity.xml

package com.example.myapplication;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
   protected void onCreate(Bundle savedInstanceState) {
      final EditText edit_query = findViewById(R.id.edit_query);
      findViewById(R.id.buttonPanel).setOnClickListener(new View.OnClickListener() {
         public void onClick(View v) {
            String data = edit_query.getText().toString();
            if (!data.isEmpty()) {
               data = data.substring(0, 1);
               if (data.equals("a") || data.equals("e") || data.equals("i") || data.equals("o") || data.equals("u"))
                  Toast.makeText(MainActivity.this, data + " is vowel", Toast.LENGTH_LONG).show();
                  Toast.makeText(MainActivity.this, data + " is consonant", Toast.LENGTH_LONG).show();

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen –

Click here to download the project code