public class AssertExample {
public static void main(String[] args) {
int x = 10;
if (args.length > 0) {
try {
x = Integer.parseInt(args[0]);
} catch (NumberFormatException nfe) {
/* Ignore */
}
}
System.out.println("Testing assertion that x == 10");
assert x == 10 : "Our assertion failed";
System.out.println("Test passed");
}
}
javac -source 1.4 AssertExample.java
java -ea AssertExample 1
Testing assertion that x == 10 Exception in thread "main" java.lang.AssertionError:Our assertion failed at AssertExample.main(AssertExample.java:20)
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