swing 组合框（下拉框）选中记录，设置下拉列表

//选中表中记录，并供下方修改或删除
private void bookTableMouseClicked(java.awt.event.MouseEvent evt) {
//获取选中的行号，根据行号获取每一列的值
int row = this.bookTable.getSelectedRow();
this.bookIdTxt
.setText((Integer) this.bookTable.getValueAt(row, 0) + "");
this.bookNameTxt.setText((String) this.bookTable.getValueAt(row, 1));
this.bookAuthorTxt.setText((String) this.bookTable.getValueAt(row, 2));
//this.sex_man.setText((String) this.bookTable.getValueAt(row, 3));
String sex = (String) this.bookTable.getValueAt(row, 3);
if ("男".equals(sex)) {
this.resetSex();
this.sex_man.setSelected(true);
} else if ("女".equals(sex)) {
this.resetSex();
this.sex_female.setSelected(true);
}

//注意这里+""转换成字符
this.bookPriceTxt.setText((Float) this.bookTable.getValueAt(row, 4)
+ "");
this.bookDescTxt.setText((String) this.bookTable.getValueAt(row, 5));
String table_BookTypeName = (String) this.bookTable.getValueAt(row, 6);

//选中记录，设置下拉列表
int n=this.bookTypeList.getItemCount();
//System.out.println(n);
for (int i=0;i<n;i++){
//System.out.println(this.bookTypeList.getItemAt(i));
BookType bookType=(BookType) this.bookTypeList.getItemAt(i);
if(bookType.getBookTypeName().equals(table_BookTypeName)){
this.bookTypeList.setSelectedIndex(i);
}
}

}