Java - How to check if an array contains a certain value

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; import android.content.Context;  import java.util.Arrays;   public class MainActivity extends AppCompatActivity {     private Context mContext;     private String mTitle = "Java - How to check if an array contains a certain value";      @Override     protected void onCreate(Bundle savedInstanceState) {         requestWindowFeature(Window.FEATURE_ACTION_BAR);         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          mContext = getApplicationContext();         getSupportActionBar().setTitle(mTitle);         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 an int array         int[] intArray = new int[]{1,2,3,4,5};          tv.setText(tv.getText() + "int array elements : ");         // Loop through int array         for (int i=0;i<intArray.length;i++){             tv.setText(tv.getText() + "" + intArray[i] + ", ");         }          // Test int array contains value '2'         // This does not work for primitive type array, such as int array         // So we need to implement custom method to check array contains value         boolean isIntArrayContains2 = Arrays.asList(intArray).contains(2);         tv.setText(tv.getText() + "\nint array contains '2' : " +isIntArrayContains2);          // Check int array contains value '5' by custom method         boolean isIntArrayContains5 = intArrayContains(intArray, 5);         tv.setText(tv.getText() + "\nint array contains '5' (custom method) : " +isIntArrayContains5);          // Initialize an Integer array with elements         Integer[] integerArray = new Integer[]{1,2,3,4,5,6,7,8,9};          tv.setText(tv.getText() + "\n\nInteger array elements : ");         // Loop through Integer array         for (int i=0;i<integerArray.length;i++){             tv.setText(tv.getText() + "" + integerArray[i] + ", ");         }          // Check Integer array contains value '2'         boolean isIntegerArrayContains2 = Arrays.asList(integerArray).contains(2);         tv.setText(tv.getText() + "\nInteger array contains '2' : " +isIntegerArrayContains2);          // Initialize a new String array         String[]  stringArray = new String[]{"Red","Green","Blue","Yellow","Black"};          tv.setText(tv.getText() + "\n\nString array elements : ");         // Loop through String array         for (int i=0;i<stringArray.length;i++){             tv.setText(tv.getText() + "" + stringArray[i] + ", ");         }          // Test String array contains value 'Blue'         boolean isStringArrayContainsBlue = Arrays.asList(stringArray).contains("Blue");         tv.setText(tv.getText() + "\n\n String array contains 'Blue' : " +isStringArrayContainsBlue);     }      // Custom method to implement int array contains     private boolean intArrayContains(int[] intArray,int value){         boolean result = false;         for (int i=0;i<intArray.length;i++){             if(intArray[i]==value){                 result = true;                 break;             }         }         return result;     } }
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