select a.name as parename ,b.name as chliname,a.typeId as paretype,b.typeid as chlitype from prodkind a inner join prodkind b where a.typeId=b.parentId
查出来的字段名称不是 parename 而是name
select name as parename ,(select name from prodkind where typeId='"+typeid+"') chilname, co ......
我用的是oracle 10g xe数据库
查询方法是这样写的
Java code:
public ResultSet executeQuery(String sql){//执行查询
Statement stmte=null;
ResultSet rs = null;
try{
conn=connPool.getConnection();
stmte=conn.createStatement(ResultSet.TYPE_S ......
有字符串 aaaabbbbccdeaa，要求输出为a4b4c2d1e1a2,我写的方法无法处理最后的那两个a，请高手指教！
public static void main(String[] args) {
String str = "aaaabbbbcdeaa";
char[] ss = str.toCharArray();
String s="";
char j;
for (j = 'a'; j < ' ......
Java code:
public class Test {
public static void main(String[] args) {
int i = 0;
fun(i);
System.out.println(i);
i = i++;
System.out.println(i);
}
public static void fun(int i) {
i++;
}
}
为什么第二� ......
我这是java查询mysql的问题
数据库中有表： price
id price
1 3元/只
2 4元/只
3& ......
byte[] temp={0x07,0x08,0x90 ,0x00,0x23,0x53,0x22,0x12.....}
for (int z = 0; z < temp.length; z++) {
numTemp = +temp[z];
}
(1) numTemp = (-numTemp) % 256;
(2) int temp22=(-(temp[0]+temp[1]+temp[2]+temp[3]+temp[4]+temp[5]+temp[6]+temp[7]+temp[8]+temp[9]+temp[10]))%256; ......
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