trycatch

public static void main(String[] args) {
    try {
        System.out.println("before try  catch exception");
        int a = 0 / 0;
        System.out.println("after tyr catch exception");//无法执行到
    } catch (Exception e) {
        System.out.println(e.getMessage());
        System.out.println("catch");
    } finally {
        System.out.println("finally");
    }
    System.out.println("before un try catch exception");
    int a = 0 / 0;
    System.out.println("after un try catch exception");//无法执行到
}

结果

before try  catch exception
/ by zero
catch
finally
before un try catch exception
Exception in thread "main" java.lang.ArithmeticException: / by zero
    at MainTest.main(MainTest.java:20)

结论

1. try语句块中，异常后面的代码无法执行
2. try catch语句块外的代码，正常执行。try catch最大意义所在（最常用场景）--保证try catch语句块后面的代码正常执行