try/catch Statement in java

e1087. try/catch Statement

The try/catch statement encloses some code and is used to handle errors and exceptions that might occur in that code. Here is the general syntax of the try/catch statement:

كود:

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try {
        body-code
    } catch (exception-classname variable-name) {
        handler-code
    }

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The try/catch statement has four parts. The body-code contains code that might throw the exception that we want to handle. The exception-classname is the class name of the exception we want to handle. The variable-name specifies a name for a variable that will hold the exception object if the exception occurs. Finally, the handler-code contains the code to execute if the exception occurs. After the handler-code executes, execution of the thread continues after the try/catch statement. Here is an example of code that tries to create a file in a non-existent directory which results in an IOException.

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String filename = "/nosuchdir/myfilename";
    try {
        // Create the file
        new File(filename).createNewFile();
    } catch (IOException e) {
        // Print out the exception that occurred
        System.out.println("Unable to create "+filename+": "+e.getMessage());
    }
    // Execution continues here after the IOException handler is executed

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Here's the output: Unable to create /nosuchdir/myfilename: The system cannot find the path specified