無法格式化輸出

System.out.println("Name\tRollno\tAddress\tPercentage"); 
while(rs.next()) 
{ 
name=rs.getString(1); 
lname=rs.getString(2); 
address=rs.getString(3); 
city=rs.getString(4); 

    System.out.print(name+"\t\t"); 

    if(lname.length()<=7) 
{ 
    System.out.print(lname+"\t\t"); 
} 
else 
    System.out.print(lname+"\t"); 

if(address.length()<=7) 
{ 
    System.out.print(address+"\t\t"); 
} 
else 
    System.out.print(address+"\t"); 

    System.out.println(city); 
}

該數據不在標題名稱地址等下方。如何格式化輸出？誰能幫我？無法格式化輸出

來源

2011-04-06 coder

儘管會的String.format工作完美，我斗膽向PrintStream.printf（）。下面的代碼將打印出你想要的完美列。根據您在結果集中有實際值，則可能需要更改值列

int nameWidth = 15 
int rollNumberWidth = 10 
int adddressWidth = 25 
int percentWidth = 5 
String format = "%" + nameWidth + "s" 
        + "%" + rollNumberWidth + "s" 
        + "%" + addressWidth + "s" 
        + "%" + percentWidth + "s\n"; 
System.out.printf(format ,"Name", "Rollno", "Address", "Percentage"); 
while(rs.next()) 
{ 
    name = rs.getString(1); 
    lname = rs.getString(2); 
    address = rs.getString(3); 
    city = rs.getString(4); 
    System.out.printf(format , name, lname, address, city); 
}

來源

2011-04-06 15:50:18