Java Tutorial/JSP/Operators
Содержание
Addition and Subtraction
<HTML>
<HEAD>
<TITLE>Addition and Subtraction</TITLE>
</HEAD>
<BODY>
<H1>Addition and Subtraction</H1>
<%
int operand1 = 15, operand2 = 24, sum, difference;
sum = operand1 + operand2;
difference = operand1 - operand2;
out.println(operand1 + " + " + operand2 + " = " + sum + "<BR>");
out.println(operand1 + " - " + operand2 + " = " + difference);
%>
</BODY>
</HTML>
Checking Operator Precedence
<HTML>
<HEAD>
<TITLE>Checking Operator Precedence</TITLE>
</HEAD>
<BODY>
<H1>Checking Operator Precedence</H1>
<%
double value;
value = (10 + 24) / 2;
out.println("The value = " + value);
%>
</BODY>
</HTML>
Incrementing and Decrementing
<HTML>
<HEAD>
<TITLE>Incrementing and Decrementing</TITLE>
</HEAD>
<BODY>
<H1>Incrementing and Decrementing</H1>
<%
int int1 = 0, int2 = 0;
out.println("int1 = " + int1 + "<BR>");
out.println("int2 = " + int2 + "<BR>");
int2 = int1++;
out.println("After <B>int2 = int1++</B>:" + "<BR>");
out.println("int1 = " + int1 + "<BR>");
out.println("int2 = " + int2 + "<BR>");
int value3 = 0, value4 = 0;
out.println("<BR>");
out.println("value3 = " + value3 + "<BR>");
out.println("value4 = " + value4 + "<BR>");
value4 = ++value3;
out.println("After <B>value4 = ++value3</B>:" + "<BR>");
out.println("value3 = " + value3 + "<BR>");
out.println("value4 = " + value4 + "<BR>");
%>
</BODY>
</HTML>
Multiplication and Division
<HTML>
<HEAD>
<TITLE>Multiplication and Division</TITLE>
</HEAD>
<BODY>
<H1>Multiplication and Division</H1>
<%
double double1 = 6, double2 = 8, double3 = 5, doubleResult;
doubleResult = double1 * double2 / double3;
out.println("6 * 8 / 5 = " + doubleResult);
%>
</BODY>
</HTML>
Using Logical Operators
<HTML>
<HEAD>
<TITLE>Using Logical Operators</TITLE>
</HEAD>
<BODY>
<H1>Using Logical Operators</H1>
<%
int temperature = 70;
if (temperature < 90 && temperature > 60) {
out.println("Picnic time!");
}
%>
</BODY>
</HTML>
Using Operators
<HTML>
<HEAD>
<TITLE>Using Operators</TITLE>
</HEAD>
<BODY>
<H1>Using Operators</H1>
<%
int operand1 = 23, operand2 = 4, product;
product = operand1 * operand2;
out.println(operand1 + " * " + operand2 +
" = " + product);
%>
</BODY>
</HTML>
Using Relational Operators
<HTML>
<HEAD>
<TITLE>Using Relational Operators</TITLE>
</HEAD>
<BODY>
<H1>Using Relational Operators</H1>
<%
int temperature = 70;
if (temperature < 80) {
out.println("Just right.");
}
%>
</BODY>
</HTML>
