Scope description of the variable in the Try-catch statement block __exception

Scope description of variables in try-catch statement block

The scope of a variable in a Try-catch statement block is the same as the scope of other statement blocks. Variables defined inside a statement block, scoped inside a statement block, and not externally visible.

    /* Statement block Internal   
    *
        /try{int a = 0;
    } catch (Exception e) {
        int b = 0;
    } finally{
        int c = 0;
    }
    /* Statement Block external * *       
    //a = 5;    Illegal, the compiler cannot recognize the variable
    //b = 5;    Illegal, the compiler cannot recognize the variable
    //c = 5;    Illegal, the compiler does not recognize the variable

A variable defined outside a statement block that can be modified within a statement block.

    /* Statement Block external *   
    /int a = 0;
    /* Statement block Internal   
    *
        /try{a = 5;
    } catch (Exception e) {
        a = 5;
    } finally{
        a = 5;
    }
    /* Statement Block external * *   
    System.out.println (a);

Run result is

5