E:\&gt;javac Cconv.java Note: Cconv.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.   Here Cconv.java is my main class. These are two errors on command screen.
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For example:  javac Foo.java Note: Foo.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.
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Conditions: do not modify the original lists; JDK only, no external libraries. Bonus points for a one-liner or a JDK 1.3 version. Is there a simpler way than: List&lt;String&gt; newList = new ArrayList&lt;String&gt;(); newList.addAll(listOne); newList.addAll(listTwo);
30359
I checked out a project from SVN and did not specify the project type, so it checked out as a "default" project.  What is the easiest way to quickly convert this into a "Java" project?  I'm using Eclipse version 3.3.2.
98843
In my initial basic tests it is perfectly safe to do so.  However, it has struck me that attempting to manipulate this later in a function that deletes this could be a runtime error.  Is this true, and is it normally safe to delete this? or are there only certain cases wherein it is safe?
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For example I have such query:  Query q = sess.createQuery("from Cat cat"); List cats = q.list();   If I try to make something like this it shows the following warning   Type safety: The expression of type List needs unchecked conversion to conform to List&lt;Cat&gt;   List&lt;Cat&gt; cats = q.list();   Is there a way to avoid it?
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How do I lock compiled Java classes to prevent decompilation?  I know this must be very well discussed topic on the Internet, but I could not come to any conclusion after referring them.  Many people do suggest obfuscator, but they just do renaming of classes, methods, and fields with tough-to-remember character sequences but what about sensitive constant values?  For example, you have developed the encryption and decryption component based on a password based encryption technique. Now in this case, any average Java person can use  to decompile the class file and easily retrieve the password value (defined as constant) as well as  and in turn can decrypt the data by writing small independent program!  Or should such sensitive components be built in native code (for example, VC++) and call them via ?
60178
In Java, is there any way to use the JDK libraries to discover the private classes implemented within another class? Or do I need so use something like asm?
18943
I'm using the Apache Commons EqualsBuilder to build the equals method for a non-static Java inner class. For example:  import org.apache.commons.lang.builder.EqualsBuilder;  public class Foo {     public class Bar {         private Bar() {}          public Foo getMyFoo() {             return Foo.this         }          private int myInt = 0;          public boolean equals(Object o) {             if (o == null || o.getClass() != getClass) return false;              Bar other = (Bar) o;             return new EqualsBuilder()                 .append(getMyFoo(), other.getMyFoo())                 .append(myInt, other.myInt)                 .isEquals();         }     }      public Bar createBar(...) {         //sensible implementation     }      public Bar createOtherBar(...) {         //another implementation     }      public boolean equals(Object o) {         //sensible equals implementation     } }   Is there syntax by which I can refer to other's Foo reference apart from declaring the getMyFoo() method? Something like other.Foo.this (which doesn't work)?
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Can you recommend a Java library for reading, parsing, validating and mapping rows in a comma separated value (CSV) file to Java value objects (JavaBeans)?
114547
When I compile my thesis.tex file which is compiled fine including the \addchap, I noticed that I have used \usepackage{unnumberedtotoc}. When I want to use my thesis.tex file on another computer it says tex capacity exceeded, sorry [input stack size=5000]. When I uncomment \usepackage{unnumberedtotoc}, it says ! undefined control sequence  \addchap.  Here I have pasted all the beginning of the packages that I have used in my thesis but I still get some problems in compilation, I don't know why, but I think if I can compile this code, then I can solve the problem  :   \immediate\write18{makeindex \jobname.nlo -s nomencl.ist -o \jobname.nls} \documentclass[12pt]{report} \DeclareMathSizes{12}{30}{16}{12} \usepackage[utf8]{inputenc} \usepackage{graphicx} \usepackage{lineno} \usepackage{amsmath}  \usepackage{array, nccmath}  \usepackage[nottoc]{tocbibind} \newcolumntype{L}{&gt;{$}l&lt;{$}} \newcolumntype{m}{&gt;{\displaystyle}l} \usepackage{framed} \usepackage{cclicenses} \usepackage{makecell} \usepackage[french]{babel} \usepackage{setspace} \usepackage{mathptmx}  \usepackage{multirow}  \usepackage{gensymb}  \usepackage{empheq}   \usepackage{mathtools}   \usepackage{array}   \renewcommand{\arraystretch}{1.9}   \newcolumntype{P}{&gt;{\centering\arraybackslash$}p{1.6em}&lt;{$}}   \newcolumntype{C}{&gt;{\centering\arraybackslash$}c&lt;{$}}   \usepackage{makecell}   \usepackage{booktabs}   \usepackage{subcaption}   \usepackage[intoc]{nomencl}   \makenomenclature   \setcounter{secnumdepth}{4}   \setcounter{tocdepth}{4}   \usepackage[justification=centering]{caption}    \usepackage{etoolbox}     \usepackage{unnumberedtotoc} %https://github.com/johannesbottcher/unnumberedtotoc/     \usepackage[automark,     plainheadsepline,     headsepline,     plainfootsepline,      footsepline,     markcase=ignoreupper]{scrlayer-scrpage}    \clearpairofpagestyles    \ihead*{\leftmark}    \cfoot*{\pagemark}    \setkomafont{pageheadfoot}{\scshape}    \usepackage{titlesec}    \graphicspath{{imagesthesis/}}    \def\frenchlistfigurename{Liste des figures}    \usepackage[a4paper,right=20mm,left=25mm,top=26mm, bottom=26mm]{geometry}    \makeatletter    \titleformat{\chapter}[display]    {\normalfont\huge\bfseries}{\chaptertitlename\ \thechapter}{20pt}{\Huge}    % this alters "before" spacing (the second length argument) to 0    \titlespacing*{\chapter}{0pt}{0pt}{20pt}    %\patchcmd{\@makechapterhead}{\vspace*{20\p@}}{}{}{}% Removes space above \chapter head    %\patchcmd{\@makeschapterhead}{\vspace*{20\p@}}{}{}{}% Removes space above \chapter* head    \makeatother    \title {itle of the thesis}    \titleformat{\paragraph}    {\normalfont\normalsize\bfseries}{\theparagraph}{1em}{}    \titlespacing*{\paragraph}     {0pt}{3.25ex plus 1ex minus .2ex}{1.5ex plus .2ex}     \usepackage[thin, , thinc]{esdiff}  \usepackage{subcaption}  \usepackage{caption}  \usepackage{framed}    \usepackage{nomencl}   \setlength{\nomitemsep}{-\parskip}\usepackage{booktabs,multirow}  \renewcommand{\cellset}{\renewcommand{\arraystretch}{0.5}}   \begin{document}  \renewcommand\arraystretch{0.8} %\noindent  \doublespacing  \maketitle  \tableofcontents %\listoffigures  \addchap{Publications et communications}   \section*{$\:$  a. Publications:}  \section*{$\:$  b. Communications:}  \addchap{Remerciements}  \end{document}
113159
I'm not sure why I'm getting this error, but shouldn't this code compile, since I'm already checking to see if queue is getting initialized?   public static void Main(String[] args) {     Byte maxSize;     Queue queue;      if(args.Length != 0)     {         if(Byte.TryParse(args[0], out maxSize))             queue = new Queue(){MaxSize = maxSize};         else             Environment.Exit(0);     }     else     {         Environment.Exit(0);     }      for(Byte j = 0; j &lt; queue.MaxSize; j++)         queue.Insert(j);     for(Byte j = 0; j &lt; queue.MaxSize; j++)         Console.WriteLine(queue.Remove()); }   So if queue is not initialized, then the for loops aren't reachable right? Since the program already terminates with Environment.Exit(0)?  Hope ya'll can give me some pointers :)  Thanks.
96218
I came across this code and wanted others to provide their point of view... is it good or bad ? ;)  Class ReportClass {  public string ReportName {get; set;} }   Then it was used as follows in code:  displayReport(ReportClass.ReportName = cmbReportName.SelectedValue.ToString())   That is about the simplest form example I can give you. Quetion is... why can't I find examples ? What would this be called? Is this just asking for trouble?  EDIT: I'm referring to the inplace assignment. Which I wasn't aware of until today
80212
For many questions the answer seems to be found in "the standard". However, where do we find that? Preferably online.  Googling can sometimes feel futile, again especially for the C standards, since they are drowned in the flood of discussions on programming forums.  To get this started, since these are the ones I am searching for right now, where are there good online resources for:   C89 C99 C11 C++98 C++03 C++11 C++14 C++17
53255
In my spring application context file, I have something like:  &lt;util:map id="someMap" map-class="java.util.HashMap" key-type="java.lang.String" value-type="java.lang.String"&gt;     &lt;entry key="some_key" value="some value" /&gt;     &lt;entry key="some_key_2" value="some value" /&gt;    &lt;/util:map&gt;   In java class, the implementation looks like:  private Map&lt;String, String&gt; someMap = new HashMap&lt;String, String&gt;(); someMap = (HashMap&lt;String, String&gt;)getApplicationContext().getBean("someMap");   In Eclipse, I see a warning that says:  Type safety: Unchecked cast from Object to HashMap  What did I do wrong? How do I resolve the issue?
109435
What is the syntax and which namespace/class needs to be imported? Give me sample code if possible. It would be of great help.
21257
Questions  Why do versions differ?   Should we trust Oracle's verification routine?    In some cases, the  is different from the version shown at the command line.   Example    That example, in detail  According to Oracle in the browser:    Java 7 Update 9   According to the Java Console:   Java Plug-in 10.9.2.05 Using JRE version 1.7.0_09-b05 Java HotSpot(TM) 64-Bit Server VM   According to the java command:   sh-3.2$ java -version java version "1.8.0-ea" Java(TM) SE Runtime Environment (build 1.8.0-ea-b58) Java HotSpot(TM) 64-Bit Server VM (build 25.0-b02, mixed mode)
90980
I installed java-8 using a PPA. After that I gave a command:  export JAVA_HOME=/usr/lib/jvm/java-8-oracle   I had heard somewhere that this command does temporary changes. But after many logouts and logins, these commands below still works (I think due to that export ... command):  java -version javac -version   But when I give the command:  export -p   It shows a list of environment variables, but in that list, does not show variable JAVA_HOME. Moreover, I wonder how the commands java and javac still works!  Can someone tell me in which file export command make changes? Are they temporary or permanent? And what else happens above? Please elaborate!