java课程设计----图书馆管理系统

}

}

}

lineForTable[i]=lineForDB[i];

else if(dataType[i]==ng.Integer.class){ }

lineForTable[i]=null;

lineForTable[i]=lineForDB[i];

if(((Integer)lineForDB[i]).doubleValue()==Integer.MIN_VALUE) else

return lineForTable;

//清空表格中所有的数据

public static void clearAllRowsInTable(CustomTableModel model){ }

//从数据库读取数据到表格, dataType指明表格中每一列的数据类型 //当前只考虑了String, Double ,Integer,Boolean ,Timestamp类型. public static void readDBToTable(Connection con,String readSql,

CustomTableModel model, Class []dataType){

clearAllRowsInTable(model); PreparedStatement query=null; try{

query= con.prepareStatement(readSql); query.clearParameters();

ResultSet rs=query.executeQuery(); while(rs.next()){

int column=model.getColumnCount(); Object []line=new Object[column]; for(int i=0;i<column;i++){

}

else if(dataType[i]==ng.Integer.class){

if(rs.getInt(i+1)==Integer.MIN_VALUE) line[i]=null; else

line[i]=new Integer(rs.getInt(i+1));

if(dataType[i]==ng.String.class)

line[i]=rs.getString(i+1).trim();

if(rs.getDouble(i+1)==Double.NEGATIVE_INFINITY) line[i]=null; else

line[i]=new Double(rs.getDouble(i+1)); else if(dataType[i]==ng.Double.class){

while(model.getRowCount()>0)

model.removeRow(0);