indexoutofboundsexception

问题 This is what I have so far. It throws an exception when I try to access an index out of bounds. I tried to say "return NULL" if the range is out of bounds for the overloaded subscript operator, but it's not working. The problem is when I try to assign a value to an index above the upper limit it allows it to happen. Like with the current code if I change the "< 8" in the main function to "< 9", it uses array element 8 without problem, but I want it to have a problem with that. Any help is

问题 I have the following code for permutation. But it is throwing the below error. 11111 21111 31111 41111 51111 61111 71111 81111 91111 01111 Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 10 at Permutation.main(nPr_3.java:22) The code is HashSet<Integer[]> set = new HashSet<Integer[]>(); int[] values = {1, 2, 3, 4, 5, 6, 7, 8, 9, 0}; int n = values.length; int r = 5; int i[] = new int[r]; int rc = 0; for(int j=0; j<Math.pow(n,r); j++) { Integer[] e = new Integer[r]; while

问题 Can someone help me understand what is wrong with this code? I want to be able to add all contacts associated with the query to a ArrayList. But using just the 'add' command make the loop apparently override it and make the size 1 again. But using the 'add' method with a index causes this error. 'IndexOutOfBoundsError'. pls. do help me. This the error log. 08-14 21:36:29.893 20439-20439/? E/Zygote﹕ MountEmulatedStorage() 08-14 21:36:29.893 20439-20439/? E/Zygote﹕ v2 08-14 21:36:29.943 20439

问题 I'm programming in Greenfoot for a school project and I keep getting this error: java.lang.IndexOutOfBoundsException: Index: 1, Size: 1 at java.util.ArrayList.rangeCheck(ArrayList.java:635) at java.util.ArrayList.get(ArrayList.java:411) at Speler.act(Speler.java:60) at greenfoot.core.Simulation.actActor(Simulation.java:583) at greenfoot.core.Simulation.runOneLoop(Simulation.java:541) at greenfoot.core.Simulation.runContent(Simulation.java:215) at greenfoot.core.Simulation.run(Simulation.java

问题 I hope people will forgive me a fairly basic JavaScript question (it's not generally a "primary" language for me). I was looking at W3Schools's JavaScript tutorial for review; their lesson on arrays has the following warning and code sample: Warning: Adding elements with high indexes can create undefined "holes" in an array: var fruits = ["Banana", "Orange", "Apple", "Mango"]; fruits[6] = "Lemon"; // adds a new element (Lemon) to fruits This will result in indices 4 and 5 containing undefined

问题 I am getting this error when I enter the String "s" after entring an integer. Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 0 at java.lang.String.charAt(Unknown Source) at oneB.change(oneB.java:4) at oneB.main(oneB.java:26) Following is the code: (Please note that the code is still complete and I have entered some print statements for checking) import java.util.Scanner; public class oneB { public static String change(int n, String s, String t

问题 I have the following code used to find the travel time between two locations. I am using vba to call the script which is why the command args shows up at the top but for testing purposes I am just setting the variables. This was working until today (didn't change anything) and now I keep getting this error once i run the results line: Error in rowXML[[dur]] : subscript out of bounds. Does anyone have any idea what could be causing this or what it means? Code: #install and load necessary

问题 I am getting .ArrayIndexOutOfBoundsException when i try to delete a row from my JTable. Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1 at java.util.Vector.elementData(Vector.java:734) at java.util.Vector.elementAt(Vector.java:477) at javax.swing.table.DefaultTableModel.getValueAt(DefaultTableModel.java:648) at Test$1.valueChanged(Test.java:34) at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:184) at javax.swing

问题 I am trying to get city in TextView using latitude and longitude. I am getting IndexOutOfBoundsException . AndroidGPSTrackingActivity.java import android.app.Activity; import android.location.Address; import android.location.Geocoder; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; import java.io.IOException; import java.util.List; import java.util.Locale; import static com.example.khaledsb.location

问题 I'm trying to learn about Lucene, and hope to use Luke to investigate it. I tried building an index with the IndexFiles demo in Lucene 4.3, then tried viewing the index with the latest version of Luke, and I'm getting the message: Invalid directory at the location, check console for more information. Last exception: org.apache.lucene.index.IndexFormatTooNewException: Format version is not supported (resource: ChecksumIndexInput(MMapIndexInput(path="/home/lavin/sep20.index/segments_2"))): 1