Reference for Processing version 1.0+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.
Name |
catch |
Examples |
BufferedReader reader;
String line;
void setup() {
// Open the file from the createWriter() example
reader = createReader("positions.txt");
}
void draw() {
try {
line = reader.readLine();
} catch (IOException e) {
e.printStackTrace();
line = null;
}
if (line == null) {
// Stop reading because of an error or file is empty
noLoop();
} else {
String[] pieces = split(line, TAB);
int x = int(pieces[0]);
int y = int(pieces[1]);
point(x, y);
}
} |
Description |
The catch keyword is used with try to handle exceptions. Sun's Java documentation defines an exception as "an event, which occurs during the execution of a program, that disrupts the normal flow of the program's instructions." This could be, for example, an error while a file is read. |
Syntax |
try {
tryStatements
} catch (exception) {
catchStatements
} |
Parameters |
tryStatements |
if this code throws and exception, the code in catch is run |
exception |
a Java exception |
catchStatements |
code that handles the exception |
|
Usage |
Web & Application |
Updated on October 18, 2009 12:28:21pm PDT