Try & catch in Java

Catch the exception you expect; let the rest travel.

var inputs = new String[] { "10", "zero", "4" };

for (var text : inputs) {
    try {
        var n = Integer.parseInt(text);
        System.out.println("100 / " + n + " = " + 100 / n);
    } catch (NumberFormatException e) {
        System.out.println("'" + text + "' is not a number");
    } finally {
        System.out.println("checked one input");
    }
}

How it works

1. Integer.parseInt throws on bad input; the typed catch names it.
2. finally runs on success and failure alike.
3. The loop survives the bad element and keeps processing.

Keywords and builtins used here

• catch
• finally
• for
• new
• try
• var

The run, in numbers

Lines

12

Characters to type

312

Tokens

102

Three-star pace

95 tpm

At the three-star pace of 95 tokens a minute, this run takes about 64 seconds.

Type this snippet

Step 1 of 3 in Errors & files, step 25 of 29 in Language basics.

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Try & catch in other languages

• C#