Java/JSP/Operator
Содержание
Adding value
<source lang="java">
<%--
Copyright (c) 2002 by Phil Hanna All rights reserved. You may study, use, modify, and distribute this software for any purpose provided that this copyright notice appears in all copies. This software is provided without warranty either expressed or implied.
--%> <%@ page session="false" %> <%
int value = 3;
%>
The value is <%= value %>
<%
value += 2;
%>
After adding 2, the value is <%= value %>
</source>
Addition and Subtraction
<source lang="java">
<HTML>
<HEAD> <TITLE>Addition and Subtraction</TITLE> </HEAD> <BODY>
Addition and Subtraction
<%
int operand1 = 15, operand2 = 24, sum, difference;
sum = operand1 + operand2;
difference = operand1 - operand2;
out.println(operand1 + " + " + operand2 + " = " + sum + "
");
out.println(operand1 + " - " + operand2 + " = " + difference);
%>
</BODY>
</HTML>
</source>
Checking Operator Precedence
<source lang="java">
<HTML>
<HEAD> <TITLE>Checking Operator Precedence</TITLE> </HEAD> <BODY>
Checking Operator Precedence
<%
double value;
value = (10 + 24) / 2;
out.println("The value = " + value);
%>
</BODY>
</HTML>
</source>
Incrementing and Decrementing
<source lang="java">
<HTML>
<HEAD> <TITLE>Incrementing and Decrementing</TITLE> </HEAD> <BODY>
Incrementing and Decrementing
<%
int value1 = 0, value2 = 0;
out.println("value1 = " + value1 + "
");
out.println("value2 = " + value2 + "
");
value2 = value1++;
out.println("After value2 = value1++:" + "
");
out.println("value1 = " + value1 + "
");
out.println("value2 = " + value2 + "
");
int value3 = 0, value4 = 0;
out.println("
");
out.println("value3 = " + value3 + "
");
out.println("value4 = " + value4 + "
");
value4 = ++value3;
out.println("After value4 = ++value3:" + "
");
out.println("value3 = " + value3 + "
");
out.println("value4 = " + value4 + "
");
%>
</BODY>
</HTML>
</source>
Multiplication and Division
<source lang="java">
<HTML>
<HEAD> <TITLE>Multiplication and Division</TITLE> </HEAD> <BODY>
Multiplication and Division
<%
double double1 = 6, double2 = 8, double3 = 5, doubleResult;
doubleResult = double1 * double2 / double3;
out.println("6 * 8 / 5 = " + doubleResult);
%>
</BODY>
</HTML>
</source>
Using Logical Operators
<source lang="java">
<HTML>
<HEAD> <TITLE>Using Logical Operators</TITLE> </HEAD> <BODY>
Using Logical Operators
<%
int temperature = 70;
if (temperature < 90 && temperature > 60) {
out.println("Picnic time!");
}
%>
</BODY>
</HTML>
</source>
Using Operators
<source lang="java">
<HTML>
<HEAD> <TITLE>Using Operators</TITLE> </HEAD> <BODY>
Using Operators
<%
int operand1 = 23, operand2 = 4, product;
product = operand1 * operand2;
out.println(operand1 + " * " + operand2 +
" = " + product);
%>
</BODY>
</HTML>
</source>
Using Relational Operators
<source lang="java">
<HTML>
<HEAD> <TITLE>Using Relational Operators</TITLE> </HEAD> <BODY>
Using Relational Operators
<%
int temperature = 70;
if (temperature < 80) {
out.println("Just right.");
}
%>
</BODY>
</HTML>
</source>
