try{

}catch(){

}finally{

}

 

例：

private int chooseMenu() {

Scanner scan = new Scanner(System.in);

System.out.println("请选择操作：");

System.out.println("1: 查询余额");

System.out.println("2: 存款");

System.out.println("3: 取款");

System.out.println("4: 转账");

System.out.println("5: 修改密码");

System.out.println("6: 退出，重新登录");

System.out.println("7: 退出系统");

System.out.println("请输入您的操作：");

int a = 0;

try {

a = scan.nextInt();

} catch (InputMismatchException ime) {

} catch (Exception ex) {

ex.printStackTrace();

}

return a;

}