java-7

问题 I am doing a POC on Java 7 new features. I have code to use String in switch statement and it works. I want to make it work in case insensitive also. Is there a way to check out with ignoreCase on String? package com.java.j7; public class Test { final private String _NEW ="NEW"; final private String _PENDING = "PENDING"; final private String _CLOSED = "CLOSED"; final private String _REJECTED ="REJECTED"; public static void main(String... strings){ Test j = new Test(); j.processItem("new"); j

问题 In Java 7 and later, diamond can be used to infer types on normally like so without an issue: List<String> list = new ArrayList<>(); However, it can't for anonymous inner classes like this: List<String> st = new List<>() { //Doesn't compile //Implementation here } Why is this? Logically in this scenario, I can definitely infer the type as String . Is there a logical reason for this decision where the type cannot actually be inferred on anonymous inner classes, or was it omitted for other

问题 I've been testing my app in Java 7 on Mac OS X. It's running noticeable sluggish. I used VisualVM to try and track down where the bottleneck was and found linear interpolation to be the culprit: g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR); To some degree this makes sense of course. Using interpolation will slow things down. But I do not see this kind of dramatic difference between using and not using interpolation in Java 6 on OS X. In

问题 I am getting this strange error while executing the following code. EncoderRequest encoderRequest = new EncoderRequest(sid,appTxnId,pfid,transactionType,"",isUpdatetype9,true); I have checked all the parameter values are valid. I am using java7 plateform. can any one have come across this situation, please help. following is the part of stacktrace i am getting. Caused by: java.lang.ClassFormatError: Illegal local variable table length 48 in method com.cmc.facts.encoder.EncoderRequest.<init>

问题 I am getting this strange error while executing the following code. EncoderRequest encoderRequest = new EncoderRequest(sid,appTxnId,pfid,transactionType,"",isUpdatetype9,true); I have checked all the parameter values are valid. I am using java7 plateform. can any one have come across this situation, please help. following is the part of stacktrace i am getting. Caused by: java.lang.ClassFormatError: Illegal local variable table length 48 in method com.cmc.facts.encoder.EncoderRequest.<init>

问题 This question already has answers here : Closure in Java 7 [closed] (7 answers) Closed 3 years ago . I have heard that closures could be introduced in the next Java standard that is scheduled to be released somewhere around next summer. What would this syntax look like? I read somewhere that introducing closures in java is a bigger change than generic was in java 5. Is this true? pros and cons? (By now we definitely know that closures not will be included in the next Java release) OR edit:

问题 This question already has answers here : Closure in Java 7 [closed] (7 answers) Closed 3 years ago . I have heard that closures could be introduced in the next Java standard that is scheduled to be released somewhere around next summer. What would this syntax look like? I read somewhere that introducing closures in java is a bigger change than generic was in java 5. Is this true? pros and cons? (By now we definitely know that closures not will be included in the next Java release) OR edit:

问题 I have basically the same problem explained here: Keep getting java.net.UnknownHostException after connecting to the internet The problem is following, when my java application starts without Internet connection, it will forever continue throwing UnknownHostException, even in the casse when Internet connection is established. The stack trace is quite huge: javax.xml.ws.WebServiceException: Failed to access the WSDL at: http://www.taxifcd.de/DebugWirelessDataWebService/wdws?wsdl. It failed

问题 This is related to question: Focus problems with JDK7 and native components. While working on workarounds we noticed that if we clicked on another component on the window (i.e. a label showing a picture) and then click on the text fields (within the Flash application), everything seemed to work fine. So I've been trying to reproduce that from code but haven't been successful. Basically, when the mouse is detected hovering over the text box I get notified from the Flash program and I request

问题 I need to convert date to this format 2015-02-27T15:14:13-06:00 I have tried with SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssX"); , but this one generating as 2015-04-09T10:39:19-04 Tks 回答1: You can either use the new Yoda time which has ISO date formatters and parsers or you can use a SimpleDateFormat of "yyyy-MM-dd'T'HH:mm:ssZ" which gives you "ccyy-mm-ddThh:mm:ss+zzzz" and insert the extra colon manually. Something like: new StringBuilder(new SimpleDateFormat("yyyy