Some fixes (Java is NOT C++ apparently)

src/main/java/de/hhu/ba/yoshikoWrapper/core/ParameterSet.java

@@ -86,26 +86,32 @@ public class ParameterSet implements TunableValidator
 	 */
 	public ParameterSet() {
 		
-		ArrayList<CyColumn> columns = new ArrayList<CyColumn>();
+		ArrayList<CyColumn> numericColumns = new ArrayList<CyColumn>();
 		
 		//Only numeric columns are relevant for weight mapping
 		for (CyColumn col : net.getDefaultEdgeTable().getColumns()) {
 			if (Number.class.isAssignableFrom(col.getType())) {
-				columns.add(col);
+				numericColumns.add(col);
 			}
 		}
-		weightColumn = new ListSingleSelection<CyColumn>(columns);
+		weightColumn = new ListSingleSelection<CyColumn>(numericColumns);
 		
-		columns.clear();
+		ArrayList<CyColumn> booleanColumns = new ArrayList<CyColumn>();
 		
 		//Only boolean columns are relevant for forbidden/permanent mapping
 		for (CyColumn col : net.getDefaultEdgeTable().getColumns()) {
 			if (col.getType() == Boolean.class) {
-				columns.add(col);
+				booleanColumns.add(col);
 			}
 		}
-		forbiddenColumn = new ListSingleSelection<CyColumn>(columns);
-		permanentColumn = new ListSingleSelection<CyColumn>(columns);
+		forbiddenColumn = new ListSingleSelection<CyColumn>(booleanColumns);
+		permanentColumn = new ListSingleSelection<CyColumn>(booleanColumns);
+		
+		//Don't select any columns by default
+		weightColumn.setSelectedValue(null);
+		forbiddenColumn.setSelectedValue(null);
+		permanentColumn.setSelectedValue(null);
+
 	}
 
 	@Override