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 ×îÐÂÎÄÕ : java

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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
²é³öÀ´µÄ×Ö¶ÎÃû³Æ²»ÊÇ parename ¶øÊÇname
select name as parename ,(select name from prodkind where typeId='"+typeid+"') chilname, co ......

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Java code:

public ResultSet executeQuery(String sql){//Ö´Ðвéѯ
Statement stmte=null;
ResultSet rs = null;
try{
conn=connPool.getConnection();
stmte=conn.createStatement(ResultSet.TYPE_S ......

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public static void main(String[] args) {
String str = "aaaabbbbcdeaa";
char[] ss = str.toCharArray();
String s="";
char j;

for (j = 'a'; j < ' ......

java ++ÔËËãµÄÒÉ»ó

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++;
}
}


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1                    3Ôª/Ö»
2                    4Ôª/Ö»
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