How To Compare Two JTable And Set Value From One JTable To Other One

I need to compare two jtable and set the value from one jtabel to the other jtable.

jtable one consist of:

Unit ID Unit Name Access

ABC, Inc ABC Incorporate (checkbox) value = uncheck

CDE, Inc CDE Incorporate (Checkbox) value = uncheck

jtable two consist of:

Unit ID Access

ABC, Inc ABC Incorporate (checkbox) value = checked
CDE, Inc CDE Incorporate (Checkbox) value = checked

if comparing jtable one an jtable two has the same Unit ID then colum Access from jtable two value is set to jtable one become check based on jtable two.I did the code but did not work:

for (i = 0, jTable1.getrowcount(), i++) {
for (j = 0, jTable1.getrowcount(), j++) {
if (jTable1.getvalueAt(i,0) == jTable2.getvalueat(j,0)) {
jTable1.setvalueat(true,i,2)
}
}
}

above code i try did not make any changes.