Java：错误解析日期字符串到日期对象

Question

我尝试将字符串转换为java上的日期。我阅读并尝试从这个网站"Java Date and Calendar examples"的例子，但我仍然无法编译和运行它。

这是我的代码。

package javaapplication5; 

import java.text.SimpleDateFormat; 
import java.util.Calendar; 
import java.util.Date; 
import java.util.Locale; 

public class JavaApplication5 { 

    public static void main(String[] args) { 
     SimpleDateFormat sdf = new SimpleDateFormat("dd-M-yyyy hh:mm:ss"); 
     String dateInString = "31-08-1982 10:20:56"; 
     Date date = sdf.parse(dateInString); 
     System.out.println(date); 
    } 

} 

我得到这个错误。

Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - unreported exception java.text.ParseException; must be caught or declared to be thrown 

我错过或做错了什么？谢谢你的帮助。

Answer 1

的问题是，java.text.ParseException是checked exception

checked异常是一种例外，那必须是捕获或在其被抛出

所以方法声明中...你可能会在throws列表声明它

public static void main(String[] args) throws ParseException { 
    /* ... */ 
} 

还是应该妥善处理这

public static void main(String[] args) { 
    try { 
     Date date = sdf.parse(dateInString); 
    } catch (ParseException e) { 
     // do proper thing here like try another 
     // format or log/rethrow/wrap exception 
    } 
} 

Answer 2

只需在try catch块中添加代码即可。

try { 
//parse code 
} 
catch (ParseException e) { 
//handling exceptions 
} 

Answer 3

尽量把所有的代码在一个try/catch块

try{ 
    // your code here. 
}catch(Exception e){ 
    e.printStackTrace(); 
} 

Answer 4

添加try-catch块这样的：

try 
{ 
    //...Code.... Mainly below: 
    Date date = sdf.parse(dateInString); 
} catch (ParseException e) 
    //Or any superclass, such as RuntimeException, 
    //although use superclass ONLY to be generic, not otherwise, such as 
    //if you want to handle all exceptions the same way. 
{ 
    //...Handler Code... 
} 

Answer 5

SimpleDateFormat sdf = new SimpleDateFormat("dd-M-yyyy hh:mm:ss"); 
      String dateInString = "31-08-1982 10:20:56"; 
      Date date = null; 
      try { 
       date = sdf.parse(dateInString); 
      } catch (ParseException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 
      System.out.println(date);