test1.java:10：錯誤：未報告的異常IOException;必須被捕獲或聲明爲被拋出char ch =（char）br.read（）;^

Question

任何幫助將不勝感激

我的代碼：

import java.io.*; 
    import java.util.Scanner; 

類接受 {

public static void main(String args[]) 
{ 
    BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); 
    System.out.print("Enter: "); 
    char ch = br.read(); 
    System.out.print("Entered is: " + ch); 
} 

}

Answer 1

就像錯誤說，你必須要麼捕捉或拋出上述方法拋出的IOException。

你可以把它：

public static void main(String args[]) throws IOException 
{ 
    BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); 
    System.out.print("Enter: "); 
    char ch = (char) br.read(); 
    System.out.print("Entered is: " + ch); 
} 

Java tutorials是開始學習Java異常的好地方。

Answer 2

你也可以試試這個：

public static void main(String[] args) { 
     try { 
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); 
      System.out.print("Enter: "); 
      char ch = (char) br.read(); 
      System.out.print("Entered is: " + ch); 
     }catch(IOException ex) { 
     Logger.getLogger(State.class.getName()).log(Level.SEVERE, null, ex); 
    } 
}