How can I represent a many to many relationship to the same table/entity in hibernate?

CREATE TABLE Table1 (pkcol1 ... PRIMARY KEY, ...);
CREATE TABLE Table2 (pkcol2 ... PRIMARY KEY, ...);
CREATE TABLE MtoM_Table1_Table2
(
     pkcol1 ... REFERENCES Table1,
     pkcol2 ... REFERENCES Table2,
     PRIMARY KEY (pkcol1, pkcol2)
);
-- CREATE INDEX fk1_mtom_table1_table2 ON MtoM_Table1_Table2(pkcol1);
-- CREATE INDEX fk2_mtom_table1_table2 ON MtoM_Table1_Table2(pkcol2);

CREATE TABLE Table1 (pkcol1 ... PRIMARY KEY, ...);
CREATE TABLE MtoM_Table1_Table1
(
     pkcol1 ... REFERENCES Table1(pkcol1),
     akcol1 ... REFERENCES Table1(pkcol1),
     PRIMARY KEY (pkcol1, akcol1)
);
-- CREATE INDEX fk1_mtom_table1_table1 ON MtoM_Table1_Table1(pkcol1);
-- CREATE INDEX fk2_mtom_table1_table1 ON MtoM_Table1_Table1(akcol1);

CREATE TABLE Table1
(
    pkcol1 ... /* PRIMARY KEY */,
    fkcol1 ... /* FOREIGN KEY REFERENCES Table1(pkcol1) */,
    ...
);
-- CREATE INDEX fk1_table1 ON Table1(pkcol1);
-- CREATE INDEX fk2_table1 ON Table1(fkcol1);