Java not a statement error at i < j

Question

When trying to compile a class, I am getting the following error;

ExcelReportServlet.java:341: error: not a statement
/* 302 */     for (Iterator localIterator = keyset.iterator();localIterator.hasNext(); i < j)

                                                                                         ^
1 error

The particular code is as follows;

int j;
int i;
for (Iterator localIterator = keyset.iterator(); localIterator.hasNext(); i < j)

What am I doing wrong? Please help...

Answer 1

If (i<j) is a condition that controls the termination of the for loop, it should be in the second part of the for statement.

For example (not sure if that's the required logic) :

for (Iterator localIterator = keyset.iterator(); localIterator.hasNext() && i < j;)

Answer 2

i < j is not a StatementExpression. And according to JLS(§14.14), the rightmost part of for loop is defined as ForUpdate which is in return a StatementExpressionList (a list of StatementExpression).