> For the complete documentation index, see [llms.txt](https://gyansetu-jspandservlets-for-java.gitbook.io/workspace/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gyansetu-jspandservlets-for-java.gitbook.io/workspace/hello-jsp.md).
# Hello JSP
### Need:
Java code inside HTML.
Step : Run on server
### Writing java code:
#### Way 1: using <% . .... %>
```markup
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
Insert title here
Hello
<%
int i = 3;
int j = 8;
int k = 3 + 8;
out.println("Value of k is " + k);
%>
```
#### Way 2: using <%=%>
```markup
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
Insert title here
Hello
<%
int i = 3;
int j = 8;
int k = i + j;
out.println("Value of k is " + k);
%>
<%
int l = 3;
int m = 12;
int n = l + m;
%>
Value of n is
<%=n%>
```
#### Way 3 : <%!...%>
```java
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
Insert title here
Hello
<%!public int sum(int a, int b) {
return a + b;
}%>
Value of sum of 67 and 89 is
<%=sum(67, 89)%>
<%
int i = 3;
int j = 8;
int k = i + j;
out.println("Value of k is " + k);
%>
<%
int l = 3;
int m = 12;
int n = l + m;
%>
Value of n is
<%=n%>
```
