java - How to convert a string to a char array

MainActivity.java

 package com.cfsuman.me.javaexamples;  import android.graphics.Color; import android.graphics.drawable.ColorDrawable; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.Window; import android.widget.RelativeLayout; import android.widget.TextView;   public class MainActivity extends AppCompatActivity {      @Override     protected void onCreate(Bundle savedInstanceState) {         requestWindowFeature(Window.FEATURE_ACTION_BAR);         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Set background color for action kafe         getSupportActionBar().setBackgroundDrawable(new ColorDrawable(Color.RED));          // Get widget reference from XML layout         RelativeLayout rl = (RelativeLayout) findViewById(R.id.rl);         TextView tv = (TextView) findViewById(R.id.tv);          // Empty the TextView         tv.setText("");          // Initialize a new string variable         String alphabet = "ABCDEFGH";         tv.setText("String : " + alphabet);          // Convert the String to char array         char[] charactersOfAlphabet = alphabet.toCharArray();          tv.setText(tv.getText() + "\nchar array elements : ");         // Iterate over the char array         for(int i=0;i<charactersOfAlphabet.length;i++){             tv.setText(tv.getText() +""+ charactersOfAlphabet[i] + ", ");         }    } } 

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