MainActivity.java (Handling Button)

package com.kamalmalix.handling_button; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final Button button = (Button) findViewById(R.id.button); final EditText editText = (EditText) findViewById(R.id.editText); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String nama = editText.getText().toString(); button.setText(nama); } }); } }