java - How to split a comma delimited string into array

MainActivity.java 
 package com.cfsuman.me.javaexamples;  import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.TextView;   public class MainActivity extends AppCompatActivity {      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Get widget reference from XML layout         TextView tv = (TextView) findViewById(R.id.tv);          // Initialize a new string         String stringOfColors = " Red,Green,,  ,   Yellow, Black ";          // Display the string         tv.setText("String :" + stringOfColors);          // Split the String by comma delimiter and generate an string array         String[] colorsArray = stringOfColors.split(",");          tv.setText(tv.getText() + "\nArray :");         // Iterate over the String array         for(int i=0;i<colorsArray.length;i++){             tv.setText(tv.getText() +""+ colorsArray[i] + "+");         }          // Split the String by comma delimiter and generate an string array         // Also remove the white spaces from elements         String[] colorsArrayWithoutSpaces = stringOfColors.split("\\s*,\\s*");          tv.setText(tv.getText() + "\nArray (remove white spaces):");         // Iterate over the String array         for(int i=0;i<colorsArrayWithoutSpaces.length;i++){             tv.setText(tv.getText() +""+ colorsArrayWithoutSpaces[i] + "+");         }          // Also remove the string leading and trailing white spaces         String[] colorsArrayWithoutSpaces2 = stringOfColors.trim().split("\\s*,\\s*");          tv.setText(tv.getText() + "\nArray (remove all white spaces):");         // Iterate over the String array         for(int i=0;i<colorsArrayWithoutSpaces2.length;i++){             tv.setText(tv.getText() +""+ colorsArrayWithoutSpaces2[i] + "+");         }          // Remove all white spaces and remove empty elements         // Using regular expression to perform task         String[] arrayWithoutEmptyElements = stringOfColors.replaceAll("^[,\\s]+", "").split("[,\\s]+");          tv.setText(tv.getText() + "\n\nFinally, you can split this way");         tv.setText(tv.getText() + "\nArray (remove empty elements):");         // Iterate over the String array         for(int i=0;i<arrayWithoutEmptyElements.length;i++){             tv.setText(tv.getText() +""+ arrayWithoutEmptyElements[i] + "+");         }     } }
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