n**********2
发帖数: 214 | 1 What is stale object in Java? How will you handle it? For example: You have
a Class A as shown below
public class A{
A(){
// code for database connection
}
// code for other method
}
Now,you are trying to create a object A by its constructor. To initialize
constructor it throws some exception to create database connection.
A obj = new A().
obj.amethod() ;
If obj.amethod() ; will be executed successfully or not ?
How will you stop your code not to use obj? |
d****i
发帖数: 4809 | 2 just use try-catch pair:
try {
A obj = new A();
obj.aMethod();
} catch (Exception ex) {
//handle exception here
}
have
【在 n**********2 的大作中提到】
: What is stale object in Java? How will you handle it? For example: You have
: a Class A as shown below
: public class A{
: A(){
: // code for database connection
: }
: // code for other method
: }
: Now,you are trying to create a object A by its constructor. To initialize
: constructor it throws some exception to create database connection.
|
n**********2
发帖数: 214 | 3 大牛能稍微解释下嘛？原理是什么
【在 d****i 的大作中提到】
: just use try-catch pair:
: try {
: A obj = new A();
: obj.aMethod();
: } catch (Exception ex) {
: //handle exception here
: }
:
: have
|
d****i
发帖数: 4809 | 4 就是异常处理，如果try block的代码抛出异常，那么catch block就抓到后处理异常。
详情参见文档：
http://docs.oracle.com/javase/tutorial/essential/exceptions/
【在 n**********2 的大作中提到】
: 大牛能稍微解释下嘛？原理是什么
|
