-4
我不知道我的代碼在哪裏投擲它的流。它有我不知道他們如何工作的各種錯誤。通過類異常的控制流不支持super(int)的超級參數,就像super(string)類型一樣。我大多是Java新手,這是一個基於用戶的異常處理程序。沒有合適的構造函數發現異常(int)
import java.util.*;
class invalidbal extends Exception{
invalidbal (int balance, int transaction){
super(balance);
super(transaction);
}
class TestCustomException1{
static void validate(int balance, int transaction)throws invalidbal{
if(balance - transaction < 0)
throw new InvalidAgeException("You are not eligible to Transact");
else
System.out.println("Post transaction your current balance is" + (balance - transaction));
}
public static void main(String args[]){
Scanner s = new Scanner(System.in);
System.out.println("Welcome to transaction checker");
System.out.println("Please enter the balance:");
a = s.nextInt();
System.out.println("Please enter the transaction:");
b = s.nextInt();
try{
validate(a,b);
}catch(Exception m){System.out.println("Exception occured: "+m);}
System.out.println("Thank you for checking!");
}
}
}
輸出如下。
[email protected]:~$ javac bal.java
bal.java:4: error: no suitable constructor found for Exception(int)
super(balance);
^
constructor Exception.Exception(String) is not applicable
(argument mismatch; int cannot be converted to String)
constructor Exception.Exception(Throwable) is not applicable
(argument mismatch; int cannot be converted to Throwable)
bal.java:5: error: call to super must be first statement in constructor
super(transaction);
^
bal.java:9: error: Illegal static declaration in inner class invalidbal.TestCustomException1
static void validate(int balance, int transaction)throws invalidbal{
^
modifier 'static' is only allowed in constant variable declarations
bal.java:20: error: cannot find symbol
a = s.nextInt();
^
symbol: variable a
location: class invalidbal.TestCustomException1
bal.java:22: error: cannot find symbol
b = s.nextInt();
^
symbol: variable b
location: class invalidbal.TestCustomException1
bal.java:24: error: cannot find symbol
validate(a,b);
^
symbol: variable a
location: class invalidbal.TestCustomException1
bal.java:24: error: cannot find symbol
validate(a,b);
^
symbol: variable b
location: class invalidbal.TestCustomException1
bal.java:16: error: Illegal static declaration in inner class invalidbal.TestCustomException1
public static void main(String args[]){
^
modifier 'static' is only allowed in constant variable declarations
Note: Some messages have been simplified; recompile with - Xdiags:verbose to get full output
8 errors
在這裏你去https://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html#constructor_summary - 選擇一個新的構造函數來使用 –
並選擇*一個*缺點tructor。你不能兩次調用super。 –
[Java找不到合適的構造函數]的可能重複(http://stackoverflow.com/questions/31354110/java-no-suitable-constructor-found) –