How to use JSP learning Scriptlet

Source: Internet
Author: User

Use of Scriptlet

There are three types of scriptlet in JSP pages:

The first kind: <%%> can write Java code inside. Define Java variables and write Java statements.

The second type: <%! %> can define global variables and methods, classes in it.

The third type of:<%=%> is used to print variables or output values.

Use of <%%>
<HTML><Head><title>This is Java page</title></Head><Body><!--Show Comment Comment content -<%   intx=Ten;inty= -;StringStr=Request.getparameter ("Info"); Out.println (""+Str+""); Out.println (""+(x+1)+""); Out.println (""+y+"");%></Body></HTML>

<%! Use of%>
<HTML><Head><title>This is Java page</title></Head><Body><!--Show Comment Comment content -<%!  PublicStatic Finalintx=Ten;%><%!  Public intAdd (intx,inty) {return x+y;}%><%!class person{Private Stringname; Private intAge ;  PublicPerson (Stringname,intAge ) {THIS.name=name; This.age=Age ; }    Public StringtoString () {return"name="+name+", age="+Age ; }}%><%! Public intLi= -;%><%Person P=NewPerson ("Test",Ten);   OUT.PRINTLN (P);   Out.println (LI); Out.println (Add (x, -));%><%  intb=Ten; Out.println (b);%></Body></HTML>

Use of <%=%>
<HTML><Head><title>This is Java page</title></Head><Body><!--Show Comment Comment content -<%   intx=Ten;inty= -;StringStr=Request.getparameter ("Info");%><%=x%><%=y%><%="Strinsssa"%></Body></HTML>

How to use JSP learning Scriptlet

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