谁能帮我解释下这几句话的意思.StringTokenizer itr = new StringTokenizer(value.toString());int sum=0;String row_idx=itr.nextToken().trim(); while (itr.hasMoreTokens()) {sum+=Integer.parseInt(itr.nextToken());

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谁能帮我解释下这几句话的意思.StringTokenizer itr = new StringTokenizer(value.toString());int sum=0;String row_idx=itr.nextToken().trim(); while (itr.hasMoreTokens()) {sum+=Integer.parseInt(itr.nextToken());
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谁能帮我解释下这几句话的意思.StringTokenizer itr = new StringTokenizer(value.toString());int sum=0;String row_idx=itr.nextToken().trim(); while (itr.hasMoreTokens()) {sum+=Integer.parseInt(itr.nextToken());
谁能帮我解释下这几句话的意思.
StringTokenizer itr = new StringTokenizer(value.toString());
int sum=0;
String row_idx=itr.nextToken().trim();
while (itr.hasMoreTokens()) {
sum+=Integer.parseInt(itr.nextToken());

谁能帮我解释下这几句话的意思.StringTokenizer itr = new StringTokenizer(value.toString());int sum=0;String row_idx=itr.nextToken().trim(); while (itr.hasMoreTokens()) {sum+=Integer.parseInt(itr.nextToken());
string="1,2,3,4,5"
sum=1+2+3+4+5