exception

问题 I have a variable MINDATE in MyConstants file. You can see the declaration below. public static final LocalDateTime MINDATE = LocalDateTime.of(LocalDate.of(2011, 1, 1), LocalTime.MIDNIGHT); I am consuming this variable in another class just by using MyConstants.MINDATE then I get the following exception Exception in thread "main" java.lang.ExceptionInInitializerError at com.cw.na.vos.DateTest.main(DateTest.java:14) Caused by: java.lang.IllegalArgumentException: Unknown pattern letter: T at

问题 I have a variable MINDATE in MyConstants file. You can see the declaration below. public static final LocalDateTime MINDATE = LocalDateTime.of(LocalDate.of(2011, 1, 1), LocalTime.MIDNIGHT); I am consuming this variable in another class just by using MyConstants.MINDATE then I get the following exception Exception in thread "main" java.lang.ExceptionInInitializerError at com.cw.na.vos.DateTest.main(DateTest.java:14) Caused by: java.lang.IllegalArgumentException: Unknown pattern letter: T at

问题 I have a variable MINDATE in MyConstants file. You can see the declaration below. public static final LocalDateTime MINDATE = LocalDateTime.of(LocalDate.of(2011, 1, 1), LocalTime.MIDNIGHT); I am consuming this variable in another class just by using MyConstants.MINDATE then I get the following exception Exception in thread "main" java.lang.ExceptionInInitializerError at com.cw.na.vos.DateTest.main(DateTest.java:14) Caused by: java.lang.IllegalArgumentException: Unknown pattern letter: T at

问题 i've got a propably simple question. I try to read the file and i want to add each single word to my array "phrase". The problem occures in for loop. I got the exception "index 0 out of bounds for length 0". Can you please help me with that? String [] tokens; String line; String hash = " "; int n = 0; String [] phrase = new String [n]; public void loadFile() { try { @SuppressWarnings("resource") BufferedReader br = new BufferedReader(new FileReader("z3data1.txt")); while((line = br.readLine()

问题 i've got a propably simple question. I try to read the file and i want to add each single word to my array "phrase". The problem occures in for loop. I got the exception "index 0 out of bounds for length 0". Can you please help me with that? String [] tokens; String line; String hash = " "; int n = 0; String [] phrase = new String [n]; public void loadFile() { try { @SuppressWarnings("resource") BufferedReader br = new BufferedReader(new FileReader("z3data1.txt")); while((line = br.readLine()

问题 I found some exceptions in the production logs. These occur many times and I don't know what might be the cause. Can anyone give me some tips about this issue? You may have encountered this problem before. I use WebSphere Application Server V8.5.5.7 and MobileFirst Platform Foundation 7.1. I have attached the stack traces below. com.ibm.ws.webcontainer.util.ApplicationErrorUtils E SRVE0777E: Exception thrown by application class 'org.apache.wink.server.internal.RequestProcessor.handleRequest

问题 Why doesn't Java allow to throw a checked exception from a static initialization block? What was the reason behind this design decision? 回答1: Because it is not possible to handle these checked exceptions in your source. You do not have any control over the initialization process and static{} blocks cannot be called from your source so that you could surround them with try-catch. Because you cannot handle any error indicated by a checked exception, it was decided to disallow throwing of

问题 Why doesn't Java allow to throw a checked exception from a static initialization block? What was the reason behind this design decision? 回答1: Because it is not possible to handle these checked exceptions in your source. You do not have any control over the initialization process and static{} blocks cannot be called from your source so that you could surround them with try-catch. Because you cannot handle any error indicated by a checked exception, it was decided to disallow throwing of

问题 I have a situation where an onClose event Handler is running due to an exception thrown. If I force it to happen with the VS debugger attached, then I can see in VS 'Locals' a $exception local variable, which has (somewhat) interesting information on it. But I can't figure out how to get at that exception within the code, so that I can log it. :( The eventArgs of my eventHandler are just the Empty Event. Asking Marshall.GetExceptionCode/Pointers() doesn't give me anything useful. Evidently

问题 while True: try: 2/0 except Exception as e: break print e Gives: integer division or modulo by zero I thought scope of e is within the while block and it will not be accessible in the outside print statement. What did I miss ? 回答1: Simple: while does not create a scope in Python. Python has only the following scopes: function scope (may include closure variables) class scope (only while the class is being defined) global (module) scope comprehension/generator expression scope So when you