Java Tutorial/JSP/for
Содержание
Finding Average Grades
<HTML>
<HEAD>
<TITLE>Finding Average Grades</TITLE>
</HEAD>
<BODY>
<H1>Finding Average Grades</H1>
<%
double grades[] = {8, 9, 7, 6, 5, 4};
double sum, average;
sum = 0;
for (int i = 0; i < grades.length; i++) {
sum += grades[i];
}
average = sum / grades.length;
out.println("Average grade = " + average);
%>
</BODY>
</HTML>
Using the for Statement
<HTML>
<HEAD>
<TITLE>Using the if Statement</TITLE>
</HEAD>
<BODY>
<H1>Using the if Statement</H1>
<%
int loopIndex;
for (loopIndex = 1; loopIndex <= 10; loopIndex++) {
out.println("This is iteration number "
+ loopIndex + "<BR>");
}
%>
</BODY>
</HTML>
Using Two Loop Indexes
<HTML>
<HEAD>
<TITLE>Using Two Loop Indexes</TITLE>
</HEAD>
<BODY>
<H1>Using Two Loop Indexes</H1>
<%
for (int i = 0, doubleIndex = 0; i <= 10; i++, doubleIndex = 2 * i) {
out.println("i: " + i + " doubleIndex: " + doubleIndex + "<BR>");
}
%>
</BODY>
</HTML>
Your for statement to loop through an array
<HTML>
<HEAD>
<TITLE>My First JSP</TITLE>
</HEAD>
<BODY>
<H1>Using the if Statement</H1>
<%
int array[] = {1, 2, 3, 4, 5}, sum = 0;
for (int i = 0; i < array.length; sum += array[i++]);
out.println("The average = " + sum / array.length);
%>
</BODY>
</HTML>
