nullpointerexception

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Java Nullpointerexception and obsolete method

I copied this code exactly out of my parallel programming book. When I tried compiling it I go a nullpointerexception which seems to be happening at the code: t[i]=newThread(counters[i]); which accord[详细]

2023-04-13 08:58 分类：问答
Java getText NullPointerException

I spend about 2 hours trying to understand why my code keeps throwing runtime errors. It doesn\'t want to accept user inputs... I\'m pretty sure my implementaion of getext is correct. Could you guys t[详细]

2023-04-12 15:08 分类：问答
nullpointerexception at sqlite populating a listview in android

i have this code: package com.rbrlnx.lugares; public class DataBaseHelper extends SQLiteOpenHelper { private static String DB_PATH = \"/data/data/com.rbrlnx.lugares/databases/\";[详细]

2023-04-12 14:47 分类：问答
Android NFC, do a null check in onCreate?

I have code to initialize my NFC adapter, but I am not sure how to intialize the varia开发者_开发百科bles during the onCreate. The app can be initialized whether an NFC TAG is in proximity or not, ie.[详细]

2023-04-12 12:12 分类：问答
ViewStub NullPointerException

I have a problem with the view stub. This is the ViewStub in my java file ViewStub stub = (ViewStub) findViewById(R.id.stub1);[详细]

2023-04-12 02:27 分类：问答
why i got “null point error” in the second method when use Junit to test Class?

My develop environment is： netbeas7.01 + mysql5 + spring3 + struts2 + jpa2（hibernate3.6； When I Refactoring a old project，I got some trouble：there is a random“null point”error when I run the p[详细]

2023-04-11 23:52 分类：问答
Ajax, Struts and a Null Pointer

I\'ve recently developed a simple ajax search. The whole code in my server is using Struts, so I had to use a somewhat cumbersome way of programming. My main method retu开发者_StackOverflow社区rns an[详细]

2023-04-11 01:59 分类：问答
Nullpointer Exception?

I am making a java game and I am getting the following error: actionPerformedException in thread "AWT-EventQueue-0" java.lang.NullPointerException[详细]

2023-04-10 21:02 分类：问答
NullPointerException while scrolling gallery widget

I have a strange error (NullPointerException) ocurring sometimes while using gallery widget, it occurs only sometimes when scrolling fast in different directions - what is strange, there\'s none of my[详细]

2023-04-10 15:13 分类：问答
Why is this an NPE?

Why do I get an NPE at Drawable pic = (Drawable) i.getDrawable();?????? I am trying to get the height and width of a drawable in order to set its scale to be fit the XY of an imageview in an imageswit[详细]

2023-04-10 04:09 分类：问答