remove some dead code

found by UCDetector

h2/src/main/org/h2/engine/DbSettings.java

@@ -344,12 +344,6 @@ public class DbSettings extends SettingsBase {
      */
     public final boolean compressData = get("COMPRESS", false);
 
-    /**
-     * Database setting <code>MULTI_THREADED</code>
-     * (default: false).<br />
-     */
-    public final boolean multiThreaded = get("MULTI_THREADED", false);
-
     private DbSettings(HashMap<String, String> s) {
         super(s);
     }

h2/src/main/org/h2/engine/Mode.java

@@ -22,11 +22,6 @@ public class Mode {
         REGULAR, DB2, Derby, MSSQLServer, HSQLDB, MySQL, Oracle, PostgreSQL, Ignite,
     }
 
-    /**
-     * The name of the default mode.
-     */
-    static final String REGULAR = ModeEnum.REGULAR.name();
-
     private static final HashMap<String, Mode> MODES = New.hashMap();
 
     // Modes are also documented in the features section
@@ -317,10 +312,6 @@ public class Mode {
         return MODES.get(StringUtils.toUpperEnglish(name));
     }
 
-    public static Mode getMySQL() {
-        return getInstance(ModeEnum.MySQL.name());
-    }
-
     public static Mode getOracle() {
         return getInstance(ModeEnum.Oracle.name());
     }

h2/src/main/org/h2/engine/SysProperties.java

@@ -85,17 +85,6 @@ public class SysProperties {
     public static final String ALLOWED_CLASSES =
             Utils.getProperty("h2.allowedClasses", "*");
 
-    /**
-     * System property <code>h2.browser</code> (default: null).<br />
-     * The preferred browser to use. If not set, the default browser is used.
-     * For Windows, to use the Internet Explorer, set this property to
-     * 'explorer'. For Mac OS, if the default browser is not Safari and you want
-     * to use Safari, use:
-     * <code>java -Dh2.browser="open,-a,Safari,%url" ...</code>.
-     */
-    public static final String BROWSER =
-            Utils.getProperty(H2_BROWSER, null);
-
     /**
      * System property <code>h2.enableAnonymousTLS</code> (default: true).<br />
      * When using TLS connection, the anonymous cipher suites should be enabled.

h2/src/main/org/h2/server/pg/PgServer.java

@@ -49,11 +49,6 @@ public class PgServer implements Service {
      */
     public static final int PG_TYPE_VARCHAR = 1043;
 
-    /**
-     * The integer array type (for the column pg_index.indkey).
-     */
-    public static final int PG_TYPE_INT2VECTOR = 22;
-
     public static final int PG_TYPE_BOOL = 16;
     public static final int PG_TYPE_BYTEA = 17;
     public static final int PG_TYPE_BPCHAR = 1042;

h2/src/main/org/h2/server/web/WebServer.java

@@ -24,7 +24,6 @@ import java.util.Map.Entry;
 import java.util.Properties;
 import java.util.Set;
 import java.util.TimeZone;
-
 import org.h2.engine.Constants;
 import org.h2.engine.SysProperties;
 import org.h2.message.DbException;
@@ -189,22 +188,6 @@ public class WebServer implements Service {
         return data;
     }
 
-    /**
-     * Check if this is a simple name (only contains '.', '-', '_', letters, or
-     * digits).
-     *
-     * @param s the string
-     * @return true if it's a simple name
-     */
-    static boolean isSimpleName(String s) {
-        for (char c : s.toCharArray()) {
-            if (c != '.' && c != '_' && c != '-' && !Character.isLetterOrDigit(c)) {
-                return false;
-            }
-        }
-        return true;
-    }
-
     /**
      * Remove this web thread from the set of running threads.
      *

h2/src/main/org/h2/store/LobStorageBackend.java

@@ -594,28 +594,6 @@ public class LobStorageBackend implements LobStorageInterface {
         return lob;
     }
 
-    @Override
-    public void setTable(ValueLobDb lob, int table) {
-        long lobId = lob.getLobId();
-        assertNotHolds(conn.getSession());
-        // see locking discussion at the top
-        synchronized (database) {
-            synchronized (conn.getSession()) {
-                try {
-                    init();
-                    String sql = "UPDATE " + LOBS + " SET TABLE = ? WHERE ID = ?";
-                    PreparedStatement prep = prepare(sql);
-                    prep.setInt(1, table);
-                    prep.setLong(2, lobId);
-                    prep.executeUpdate();
-                    reuse(sql, prep);
-                } catch (SQLException e) {
-                    throw DbException.convert(e);
-                }
-            }
-        }
-    }
-
     private static void assertNotHolds(Object lock) {
         if (Thread.holdsLock(lock)) {
             throw DbException.throwInternalError(lock.toString());

h2/src/main/org/h2/store/LobStorageFrontend.java

@@ -72,11 +72,6 @@ public class LobStorageFrontend implements LobStorageInterface {
         throw new UnsupportedOperationException();
     }
 
-    @Override
-    public void setTable(ValueLobDb lob, int tableIdSessionVariable) {
-        throw new UnsupportedOperationException();
-    }
-
     @Override
     public void removeAllForTable(int tableId) {
         throw new UnsupportedOperationException();

h2/src/main/org/h2/store/LobStorageInterface.java

@@ -55,14 +55,6 @@ public interface LobStorageInterface {
     InputStream getInputStream(ValueLobDb lob, byte[] hmac, long byteCount)
             throws IOException;
 
-    /**
-     * Set the table reference of this lob.
-     *
-     * @param lob the lob
-     * @param table the table
-     */
-    void setTable(ValueLobDb lob, int table);
-
     /**
      * Delete a LOB (from the database, if it is stored there).
      *

h2/src/main/org/h2/store/LobStorageMap.java

@@ -289,19 +289,6 @@ public class LobStorageMap implements LobStorageInterface {
         return streamStore.get(streamStoreId);
     }
 
-    @Override
-    public void setTable(ValueLobDb lob, int tableId) {
-        init();
-        long lobId = lob.getLobId();
-        Object[] value = lobMap.remove(lobId);
-        if (TRACE) {
-            trace("move " + lob.getTableId() + "/" + lob.getLobId() +
-                    " > " + tableId + "/" + lobId);
-        }
-        value[1] = tableId;
-        lobMap.put(lobId, value);
-    }
-
     @Override
     public void removeAllForTable(int tableId) {
         init();

h2/src/main/org/h2/table/Column.java

@@ -95,10 +95,6 @@ public class Column {
         this(name, type, -1, -1, -1, null);
     }
 
-    public Column(String name, int type, String[] enumerators) {
-        this(name, type, -1, -1, -1, enumerators);
-    }
-
     public Column(String name, int type, long precision, int scale,
             int displaySize) {
         this(name, type, precision, scale, displaySize, null);

h2/src/main/org/h2/util/ColumnNamer.java

@@ -35,15 +35,6 @@ public class ColumnNamer {
         }
     }
 
-    /**
-     * Create a standardized column name that isn't null and doesn't have a CR/LF in it.
-     * @param expr the column expression
-     * @param indexOfColumn index of column in below array
-     */
-    public String getColumnName(Expression expr, int indexOfColumn) {
-        return getColumnName(expr, indexOfColumn, (String) null);
-    }
-
     /**
      * Create a standardized column name that isn't null and doesn't have a CR/LF in it.
      * @param columnExp the column expression

h2/src/main/org/h2/util/Task.java

@@ -94,16 +94,6 @@ public abstract class Task implements Runnable {
         return finished;
     }
 
-    /**
-     * Interrupt the thread.
-     */
-    public void interruptThread() {
-        if (thread == null) {
-            throw new IllegalStateException("Thread not started");
-        }
-        thread.interrupt();
-    }
-
     /**
      * Get the exception that was thrown in the call (if any).
      *

h2/src/test/org/h2/test/utils/TestColumnNamer.java

@@ -26,13 +26,12 @@ public class TestColumnNamer extends TestBase {
 
     /**
      * Run just this test.
-     *
-     * @param a ignored
      */
     public static void main(String[] args) {
         new TestColumnNamer().test();
     }
 
+    @Override
     public void test() {
         ColumnNamer columnNamer = new ColumnNamer(null);
         columnNamer.getConfiguration().configure("MAX_IDENTIFIER_LENGTH = 30");

h2/src/tools/org/h2/build/doc/XMLParser.java

@@ -394,21 +394,6 @@ public class XMLParser {
         return eventType;
     }
 
-    /**
-     * Read the next start, end, or character tag. This method skips comments,
-     * DTDs, and processing instructions.
-     *
-     * @return the event type of the next tag
-     */
-    public int nextTag() {
-        while (true) {
-            int type = next();
-            if (type != COMMENT && type != DTD && type != PROCESSING_INSTRUCTION) {
-                return type;
-            }
-        }
-    }
-
     /**
      * Get the event type of the current token.
      *
@@ -465,46 +450,6 @@ public class XMLParser {
         return attributeValues[index * 3 + 1];
     }
 
-    /**
-     * Get the full name of the attribute. If there is no prefix, only the local
-     * name is returned, otherwise the prefix, ':', and the local name.
-     *
-     * @param index the index of the attribute (starting with 0)
-     * @return the full name
-     */
-    public String getAttributeName(int index) {
-        String pre = getAttributePrefix(index);
-        String name = getAttributeLocalName(index);
-        return pre == null || pre.length() == 0 ? name : pre + ":" + name;
-    }
-
-    /**
-     * Get the value of this attribute.
-     *
-     * @param index the index of the attribute (starting with 0)
-     * @return the value
-     */
-    public String getAttributeValue(int index) {
-        return attributeValues[index * 3 + 2];
-    }
-
-    /**
-     * Get the value of this attribute.
-     *
-     * @param namespaceURI the namespace URI (currently ignored)
-     * @param name the local name of the attribute
-     * @return the value or null
-     */
-    public String getAttributeValue(@SuppressWarnings("unused") String namespaceURI, String name) {
-        int len = getAttributeCount();
-        for (int i = 0; i < len; i++) {
-            if (getAttributeLocalName(i).equals(name)) {
-                return getAttributeValue(i);
-            }
-        }
-        return null;
-    }
-
     /**
      * Get the full name of the current start or end element. If there is no
      * prefix, only the local name is returned, otherwise the prefix, ':', and