Java Utililty Methods SQL Table Drop

int ret = 0;
try {
    Statement statement = conn.createStatement();
    String sql = String.format("DELETE FROM %s WHERE id = %s;", table, id);
    ret = statement.executeUpdate(sql);
    statement.close();
} catch (SQLException e) {
    e.printStackTrace();
...

stmt.executeUpdate("TRUNCATE " + tableName);

Statement stmt = null;
try {
    stmt = con.createStatement();
    stmt.executeUpdate("delete " + tableName);
} finally {
    if (stmt != null) {
        stmt.close();

Statement stmt = con.createStatement();
try {
    String sql = "DROP TABLE " + table + " CASCADE ";
    stmt.executeUpdate(sql);
} catch (SQLException ex) {
    if (!con.getAutoCommit()) {
        throw ex;

Statement stmt = null;
try {
    stmt = con.createStatement();
    stmt.executeUpdate("drop table " + tableName);
} catch (SQLException ex) {
    ; 
} finally {
    if (stmt != null) {
...

Statement stmt = null;
try {
    stmt = conn.createStatement();
    stmt.executeUpdate("drop table " + table);
} catch (SQLException e) {
    Logger.global.log(Level.FINE, "Drop table failed for = " + table);
    Logger.global.log(Level.FINE, "==============\n\n");
} finally {
...

StringBuilder sb = new StringBuilder();
sb.append("DROP TABLE IF EXISTS ");
sb.append(tablename);
String sql = sb.toString();
Statement stmt = null;
try {
    stmt = conn.createStatement();
    stmt.executeUpdate(sql);
...

executeStatement(conn, String.format("DROP TABLE IF EXISTS %s", tableName));

Statement statement = connection.createStatement();
statement.execute(DROP_TABLE_QUERY);

try (Statement statement = connection.createStatement()) {
    statement.execute("drop table METRICS_TEST");