Bug#875790: FTBFS with Java 9: configure fails to detect Java

[Emmanuel Bourg]

The detection of the JDK has been fixed in scilab 6.0.1, but there are
some compilations issues left caused by Swing changes in Java 9:



./scilab/modules/xcos/src/java/org/scilab/modules/xcos/BrowserView.java:260:
error: incompatible types: Enumeration<TreeNode> cannot be converted to
Enumeration<DefaultMutableTreeNode>
          for (Enumeration<DefaultMutableTreeNode> e =
root.depthFirstEnumeration(); e.hasMoreElements();) {

        ^

./scilab/modules/xcos/src/java/org/scilab/modules/xcos/block/actions/SuperblockMaskCustomizeAction.java:758:
error: incompatible types: Vector<Vector> cannot be converted to
List<List<?>>
                  final List < List<? >> data = model.getDataVector();
                                                                   ^

./scilab/modules/xcos/src/java/org/scilab/modules/xcos/palette/model/Palette.java:61:
error: children() in Palette cannot implement children() in TreeNode
      public Enumeration<Object> children() {
                                 ^
    return type Enumeration<Object> is not compatible with Enumeration<?
extends TreeNode>

./scilab/modules/xcos/src/java/org/scilab/modules/xcos/palette/model/Palette.java:60:
error: method does not override or implement a method from a supertype
      @Override
      ^

./scilab/modules/xcos/src/java/org/scilab/modules/xcos/palette/model/PreLoaded.java:53:
error: PreLoaded is not abstract and does not override abstract method
children() in TreeNode
  public class PreLoaded extends Palette {
         ^

./scilab/modules/xcos/src/java/org/scilab/modules/xcos/palette/model/PreLoaded.java:59:
error: children() in Palette cannot implement children() in TreeNode
      public static class Dynamic extends PreLoaded {
                    ^

./scilab/modules/xcos/src/java/org/scilab/modules/xcos/palette/model/Custom.java:48:
error: Custom is not abstract and does not override abstract method
children() in TreeNode
  public class Custom extends Palette {
         ^