Exception handle korar jonno ami je sokol use korbo

Exception handle korar jonno ami je sokol use korbo

Exception handle korar jonno ami je sokol use korbo

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Handler;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements OnClickListener {

    private EditText editText, editText2;

    private Button addbutton, subbutton;

    private TextView textView2; // output pawar jonno aie text view use koro hoy
    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        editText = (EditText) findViewById(R.id.likhon1);
        editText2 = (EditText) findViewById(R.id.likhon3);
        addbutton = (Button) findViewById(R.id.buttonidtext);
        subbutton = (Button) findViewById(R.id.buttonidtext25);
        textView2 = (TextView) findViewById(R.id.textide);


        addbutton.setOnClickListener(this);
        subbutton.setOnClickListener(this);

    }

    @Override    public void onClick(View v) {
        try{//Exception dekhadile try blog or try catch ar modhe sob rekhe debo 

            String number1 = editText2.getText().toString();
            String number2 = editText2.getText().toString();

            double num = Double.parseDouble(number1);
            double num2 = Double.parseDouble(number2);

            if (v.getId() == R.id.buttonidtext) {

                double sum = num + num2;

                textView2.setText(" Result : " + sum);
            } else if (v.getId() == R.id.buttonidtext25) {

                double sub = num - num2;

                textView2.setText(" Result : " + sub);
            }

        }catch (Exception e){  //jolhkon amora excption dekha dibe tokhon amader akta message dekhabe tai amora toast use korechi 

            Toast toast = Toast.makeText(MainActivity.this," please enter anynumber",Toast.LENGTH_SHORT);
            toast.setGravity(Gravity.CENTER,0,0);
            toast.show();

        }



    }
}