Java/JSP/Try Catch
Содержание
Multiple Catch
<HTML>
<HEAD>
<TITLE>Catching an ArrayIndexOutOfBoundsException Exception</TITLE>
</HEAD>
<BODY>
<H1>Catching an ArrayIndexOutOfBoundsException Exception</H1>
<%
try {
int array[] = new int[100];
array[100] = 100;
} catch (ArrayIndexOutOfBoundsException e) {
out.println("Array index out of bounds.");
} catch(ArithmeticException e) {
out.println("Arithmetic exception: " + e);
} catch(Exception e) {
out.println("An error occurred: " + e);
}
%>
</BODY>
</HTML>
Nesting try/catch Statements
<HTML>
<HEAD>
<TITLE>Nesting try/catch Statements</TITLE>
</HEAD>
<BODY>
<H1>Nesting try/catch Statements</H1>
<%
try {
try {
int c[] = {0, 1, 2, 3};
c[4] = 4;
} catch(ArrayIndexOutOfBoundsException e) {
out.println("Array index out of bounds: " + e);
}
} catch(ArithmeticException e) {
out.println("Divide by zero: " + e);
}
%>
</BODY>
</HTML>
Printing a Stack Trace to the Server Console
<HTML>
<HEAD>
<TITLE>Printing a Stack Trace to the Server Console</TITLE>
</HEAD>
<BODY>
<H1>Printing a Stack Trace to the Server Console</H1>
<%
try{
int value = 1;
value = value / 0;
}
catch (Exception e){
e.printStackTrace();
}
%>
</BODY>
</HTML>
Using a try/catch Block
<HTML>
<HEAD>
<TITLE>Using a try/catch Block</TITLE>
</HEAD>
<BODY>
<H1>Using a try/catch Block</H1>
<%
try{
int i = 1;
i = i / 0;
out.println("The answer is " + i);
}
catch (Exception e){
out.println("An exception occurred: " + e.getMessage());
}
%>
</BODY>
</HTML>
