Java string.split() is throwing ArrayIndexOutOfBoundsException

Question

I'm trying to use the split method over a string. This throws an ArrayOutOfBoundsException and I have no clue why. I've tried many strings and many separators.

    String temp = "abcd&efgh&ijkl&mnop";
    String[] tempArr = temp.split("ijk");

This is the error log:

10-13 12:20:30.619: E/AndroidRuntime(775): FATAL EXCEPTION: main
10-13 12:20:30.619: E/AndroidRuntime(775): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.lino/com.example.lino.LinesActivity}:    java.lang.ArrayIndexOutOfBoundsException
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.os.Handler.dispatchMessage(Handler.java:99)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.os.Looper.loop(Looper.java:123)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.ActivityThread.main(ActivityThread.java:3683)
10-13 12:20:30.619: E/AndroidRuntime(775):  at java.lang.reflect.Method.invokeNative(Native Method)
10-13 12:20:30.619: E/AndroidRuntime(775):  at java.lang.reflect.Method.invoke(Method.java:507)
10-13 12:20:30.619: E/AndroidRuntime(775):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
10-13 12:20:30.619: E/AndroidRuntime(775):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
10-13 12:20:30.619: E/AndroidRuntime(775):  at dalvik.system.NativeStart.main(Native Method)
10-13 12:20:30.619: E/AndroidRuntime(775): Caused by: java.lang.ArrayIndexOutOfBoundsException
10-13 12:20:30.619: E/AndroidRuntime(775):  at com.example.lino.LinesActivity.onCreate(LinesActivity.java:32)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
10-13 12:20:30.619: E/AndroidRuntime(775):  ... 11 more

Edit

This is the entire class:

    package com.example.lino;

    import java.lang.reflect.Array;
    import java.util.ArrayList;
    import java.util.List;

    import android.os.Bundle;
    import android.app.Activity;
    import android.util.TypedValue;
    import android.view.ViewGroup.LayoutParams;
    import android.widget.LinearLayout;
    import android.widget.TextView;


    public class LinesActivity extends Activity {

        TextView tvTitle;
        String bussinessId, bussinessTitle;
        String[] passedString;
        List<Line> linesList;

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.lines_layout);

            tvTitle = (TextView) findViewById(R.id.tvMainTitle);

            Bundle passedBundle = getIntent().getExtras();
            passedString = passedBundle.getString("BussinessName").split(":");

            bussinessId = passedString[0];
            bussinessTitle = passedString[1]; // THIS IS LINE 32, BUT IT'S WORKING WELL

            tvTitle.setText(bussinessTitle);

            try {
                String temp = "abcd&efgh&ijkl&mnop";
                String[] tempArr = temp.split("ijk");

            } catch (Exception e) {
                e.printStackTrace();

            }
        }
    }

Answer 1

Running :

String temp = "abcd&efgh&ijkl&mnop";
String[] tempArr = temp.split("ijk");
System.out.println(Arrays.toString(tempArr));

I get

[abcd&efgh&, l&mnop]

with no Exception.

In my editor line 32 is actually shown as:

bussinessId = passedString[0];

which would indicate that the first String.split :

passedString = passedBundle.getString("BussinessName").split(":");

was not what you had intended.

Check the content of passedBundle.getString("BussinessName") to see if it contains a : character.

Answer 2

passedString = passedBundle.getString("BussinessName").split(":");

I guess your passedBundle.getString("BussinessName").split(":");

is returning only one element and you are trying to accessing the second element from the passedString by using bussinessTitle = passedString[1];

before fetching the elements from the passedString array print the length of the passedString in your log or

System.out.println(passedString.length);

and before accessing the element from the passedString array it's better to put a condition

if(passedString.length>0)
{
bussinessId = passedString[0];
bussinessTitle = passedString[1]; 

}

Answer 3

The code you have given cannot throw an Exception and crash.

I guess you forgotten to copy the code Line 32 of LinesActivity as stated in the logcat.

I am pretty sure you are reading a non existent line of the Array: tempArr