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Thread: No error from netbeans, tons of errors with javac

  1. #1
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    Default No error from netbeans, tons of errors with javac

    Hi guys,
    a dilemma. I use netbeans to prepare, debug, run my project. Everything seems ok and I get what I want even if its really slow.

    Today I tried to use javac -Xlint my.class another.class and got tons of errors.

    Question is why netbeans gives no errors while javac makes me cry?
    IMHO this means that once I get the final project with netbeans will put it in the trashcan if I want an executable (I dont like java -jar foo.jar)

    paps

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: No error from netbeans, tons of errors with javac

    got tons of errors.
    Can you post some of the error messages?

    What happens when you specify only one java source file with the javac command? Your example shows class files being passed as args to the javac command.

    Note: java source files have an extension of .java. The output from the compiler is written to a .class file.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: No error from netbeans, tons of errors with javac

    I ran it again and noticed they are just warning.
    I expected netbeans to report them


    robin@mosby: javac -Xlint MamboUI.java displayResult.java > /HDB1/temp/java.log
    MamboUI.java:17: warning: [serial] serializable class MamboUI has no definition of serialVersionUID
    public class MamboUI extends JFrame {
           ^
    displayResult.java:61: warning: [rawtypes] found raw type: ArrayList
            ArrayList columnNames = new ArrayList();
            ^
      missing type arguments for generic class ArrayList<E>
      where E is a type-variable:
        E extends Object declared in class ArrayList
    displayResult.java:61: warning: [rawtypes] found raw type: ArrayList
            ArrayList columnNames = new ArrayList();
                                        ^
      missing type arguments for generic class ArrayList<E>
      where E is a type-variable:
        E extends Object declared in class ArrayList
    displayResult.java:62: warning: [rawtypes] found raw type: ArrayList
            ArrayList data = new ArrayList();
            ^
      missing type arguments for generic class ArrayList<E>
      where E is a type-variable:
        E extends Object declared in class ArrayList
    displayResult.java:62: warning: [rawtypes] found raw type: ArrayList
            ArrayList data = new ArrayList();
                                 ^
      missing type arguments for generic class ArrayList<E>
      where E is a type-variable:
        E extends Object declared in class ArrayList
    displayResult.java:89: warning: [unchecked] unchecked call to add(E) as a member of the raw type ArrayList
                        columnNames.add(ColumnName );
                                       ^
      where E is a type-variable:
        E extends Object declared in class ArrayList
    displayResult.java:91: warning: [unchecked] unchecked call to add(E) as a member of the raw type ArrayList
                    else {columnNames.add(columnVal );}
                                         ^
      where E is a type-variable:
        E extends Object declared in class ArrayList
    displayResult.java:97: warning: [rawtypes] found raw type: ArrayList
                    ArrayList row = new ArrayList(columns);
                    ^
      missing type arguments for generic class ArrayList<E>
      where E is a type-variable:
        E extends Object declared in class ArrayList
    displayResult.java:97: warning: [rawtypes] found raw type: ArrayList
                    ArrayList row = new ArrayList(columns);
                                        ^
      missing type arguments for generic class ArrayList<E>
      where E is a type-variable:
        E extends Object declared in class ArrayList
    displayResult.java:108: warning: [unchecked] unchecked call to add(E) as a member of the raw type ArrayList
                                       if (dummy.equals(pippo)) { pippo = "--"; row.add(pippo); } break;
    [.... all case inside a switch]
                                                                                       ^
      where E is a type-variable:
        E extends Object declared in class ArrayList
    displayResult.java:137: warning: [unchecked] unchecked call to add(E) as a member of the raw type ArrayList
                            default  : row.add( rs.getObject(i) ); break;          
                                              ^
      where E is a type-variable:
        E extends Object declared in class ArrayList
    displayResult.java:141: warning: [unchecked] unchecked call to add(E) as a member of the raw type ArrayList
                    data.add( row );
                            ^
      where E is a type-variable:
        E extends Object declared in class ArrayList
    displayResult.java:150: warning: [rawtypes] found raw type: Vector
            Vector columnNamesVector = new Vector();
            ^
      missing type arguments for generic class Vector<E>
      where E is a type-variable:
        E extends Object declared in class Vector
    displayResult.java:150: warning: [rawtypes] found raw type: Vector
            Vector columnNamesVector = new Vector();
                                           ^
      missing type arguments for generic class Vector<E>
      where E is a type-variable:
        E extends Object declared in class Vector
    displayResult.java:151: warning: [rawtypes] found raw type: Vector
            Vector dataVector = new Vector();
            ^
      missing type arguments for generic class Vector<E>
      where E is a type-variable:
        E extends Object declared in class Vector
    displayResult.java:151: warning: [rawtypes] found raw type: Vector
            Vector dataVector = new Vector();
                                    ^
      missing type arguments for generic class Vector<E>
      where E is a type-variable:
        E extends Object declared in class Vector
    displayResult.java:155: warning: [rawtypes] found raw type: ArrayList
                ArrayList subArray = (ArrayList)data.get(i);
                ^
      missing type arguments for generic class ArrayList<E>
      where E is a type-variable:
        E extends Object declared in class ArrayList
    displayResult.java:156: warning: [rawtypes] found raw type: Vector
                Vector subVector = new Vector();
                ^
      missing type arguments for generic class Vector<E>
      where E is a type-variable:
        E extends Object declared in class Vector
    displayResult.java:156: warning: [rawtypes] found raw type: Vector
                Vector subVector = new Vector();
                                       ^
      missing type arguments for generic class Vector<E>
      where E is a type-variable:
        E extends Object declared in class Vector
    displayResult.java:159: warning: [unchecked] unchecked call to add(E) as a member of the raw type Vector
                    subVector.add(subArray.get(j));
                                 ^
      where E is a type-variable:
        E extends Object declared in class Vector
    displayResult.java:161: warning: [unchecked] unchecked call to add(E) as a member of the raw type Vector
                dataVector.add(subVector);
                              ^
      where E is a type-variable:
        E extends Object declared in class Vector
    displayResult.java:165: warning: [unchecked] unchecked call to add(E) as a member of the raw type Vector
                columnNamesVector.add(columnNames.get(i));
                                     ^
      where E is a type-variable:
        E extends Object declared in class Vector
    displayResult.java:264: warning: [serial] serializable class displayResult.CustomCellRenderer has no definition of serialVersionUID
    public class CustomCellRenderer extends JLabel implements TableCellRenderer {
           ^
    displayResult.java:33: warning: [serial] serializable class displayResult has no definition of serialVersionUID
    public class displayResult extends JFrame {
           ^
    38 warnings

    Note: ...and yes you are right. I was a typo. Its really hot here

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: No error from netbeans, tons of errors with javac

    I expected netbeans to report them
    Yes it should have reported them.

    The collection classes all use Generics. You should read up on Generics and start coding with it.
    https://docs.oracle.com/javase/tutor...ics/index.html
    If you don't understand my answer, don't ignore it, ask a question.

  5. #5
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    Default Re: No error from netbeans, tons of errors with javac

    thank you

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