jdk1.6

Parsing Data for android-21 failed Unsupported major.minor version 51.0 in mac os Eclipse

前提是你 提交于 2019-12-03 14:35:39
i am using Mac os x Yosemite version 10.10.1 And Eclipse Luna 4.4 i integrated Android SDK into Eclipse and it showing the Following Error i searched in net and i came to know that this problem is based on java JDK version problem. in My mac i installed JDK 1.6 and 1.7 and 1.8 as well. i know JDK 1.6 will not support for android 5. so in Eclipse i set the java compiler to JDK 1.7 but after setting if i restart the Eclipse its again setting to JDK 1.6 . My question is which JDK will support the Android SDK in Mac. And How to completely uninstall the JDK 1.6 from my mac machine. i am facing this

Add warning for missing @Override annotation for interface implementation in Eclipse

心不动则不痛 提交于 2019-12-03 09:23:09
问题 In Eclipse 3.4.1 using JDK1.6.0_10 how can I activate a warning on a missing @Override annotation on a method that implements an interface method? In the Preferences window this option: Java > Compiler > Errors / Warnings > Annotations > Missing '@Override' annotation works fine for missing annotations on methods that override a superclass method, but it does nothing for interface methods. 回答1: It is not possible in Eclipse 3.4.1. It is a known issue. See this bug report page for more

How to shutdown com.sun.net.httpserver.HttpServer?

瘦欲@ 提交于 2019-12-03 03:47:55
The Http Server embedded in JDK 6 is a big help developing web services, but I've got situation where I published an Endpoint and then the code crashed and left the server running. How do you shutdown the embedded server once you've lost the reference to it (or the published Endpoint)? I use the below code to start it this.httpServer = HttpServer.create(addr, 0); HttpContext context = this.httpServer.createContext("/", new DocumentProcessHandler()); this.httpThreadPool = Executors.newFixedThreadPool(this.noOfThreads); this.httpServer.setExecutor(this.httpThreadPool); this.httpServer.start();

Add warning for missing @Override annotation for interface implementation in Eclipse

百般思念 提交于 2019-12-02 23:40:07
In Eclipse 3.4.1 using JDK1.6.0_10 how can I activate a warning on a missing @Override annotation on a method that implements an interface method? In the Preferences window this option: Java > Compiler > Errors / Warnings > Annotations > Missing '@Override' annotation works fine for missing annotations on methods that override a superclass method, but it does nothing for interface methods. It is not possible in Eclipse 3.4.1. It is a known issue . See this bug report page for more information. Belay what I said in the other thread. Apparently it's not a compiler option, but a Java

Problem overriding ArrayList add method

a 夏天 提交于 2019-12-02 14:44:59
问题 I have a class that is extending Java's ArrayList. I'm currently using Java build 1.6.0_22-b04. Looks like this: public class TokenSequence extends ArrayList<Token>{ public TokenSequence (Collection<Token> tokens) { super(tokens); } public void add(Object o) { if (o instanceof Token){ add( (Token)o ); } else if (o instanceof TokenSequence) add( (TokenSequence)o ); else add( new Token( o.toString() ) ); } } My problem in the above code is the add(Object o) method. Java won't let me compile the

to increase MaxPermSize memory in Java by command line

这一生的挚爱 提交于 2019-12-02 12:18:01
问题 Could you please explain me how to increase this PermSpace size. I am using Gate application and loading huge amount of data and large number of plugins and unfortunately after every run it gives the error about the out of memory maxPermSpace. I searched everywhere, but I could not find how to increase this size through command line or may be the file where I could update the data? I really need some help in order to complete my project. Please explain how to do this by command line I am

Problem overriding ArrayList add method

六月ゝ 毕业季﹏ 提交于 2019-12-02 08:35:43
I have a class that is extending Java's ArrayList. I'm currently using Java build 1.6.0_22-b04. Looks like this: public class TokenSequence extends ArrayList<Token>{ public TokenSequence (Collection<Token> tokens) { super(tokens); } public void add(Object o) { if (o instanceof Token){ add( (Token)o ); } else if (o instanceof TokenSequence) add( (TokenSequence)o ); else add( new Token( o.toString() ) ); } } My problem in the above code is the add(Object o) method. Java won't let me compile the code because it says "Name clash: The method add(Object) of type TokenSequence has the same erasure as

JVM crashes on Lucene DataInput.readVInt

懵懂的女人 提交于 2019-12-02 07:51:14
问题 My JVM (1.6.0_29) keeps crashing on intensive use when indexing documents with Lucene. I get: # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x00002b6b196d767c, pid=26417, tid=1183217984 # # JRE version: 6.0_29-b11 # Java VM: Java HotSpot(TM) 64-Bit Server VM (20.4-b02 mixed mode linux-amd64 compressed oops) # Problematic frame: # J org.apache.lucene.store.DataInput.readVInt()I # # If you would like to submit a bug report, please visit: # http:/

Java annotation cannot access protected static fields from upper class

寵の児 提交于 2019-12-01 21:27:53
问题 Is this code valid? public abstract class A { protected static final String c = "my const"; } @myAnnotation(value=A.c) public class B extends A { } Eclipse with JDK 1.6.0.23 accepts this, but Maven 2.2.1 with JDK 1.6.0.23 shows me the following compile error: c has protected access in A 回答1: I think I see what is happening here. An instance of an annotations is effectively an interface with a unique static initializer. The only things the annotation spec adds on top are syntactic sugar and a

How many characters can a Java StringBuilder hold?

♀尐吖头ヾ 提交于 2019-12-01 15:00:56
问题 Does StringBuilder have a limit of characters for maximum capacity in JAVA. StringBuilder url=new StringBuilder(); stmt = connnection.createStatement(); String sql="SOME QUERY"; rs = stmt.executeQuery(sql); while(rs.next()) { String emailId=rs.getString("USER_EMAIL_ID"); url.append(emailId); } does StringBuilder variable 'url' have a maximum capacity, or it can hold everything? 回答1: Yes, it has limitation in capacity of max integer which 2147483647(technically). StringBuilder internally holds