java--jdk1.5 New Enhanced for loop

Source: Internet
Author: User

<1>jdk1.5 new for loop is very handy for traversing an array or collection.

<2> defects:array: The subscript value cannot be easily accessed. Collection: It is not easy to delete things in the collection compared to using Interator. inside is also called Interato<3> Summary:In addition to simply traversing and reading out the contents, it is not recommended to use the enhanced for.  "Program Analysis"  int[] arr = {1,2,3,4,5};for (int i:arr) {System.out.println (i);  } Collection C = new ArrayList ();C.add (New String ("AA"));C.add (New String ("BB"));For (Object o:c) {System.out.println (o);  }  

java--jdk1.5 New Enhanced for loop

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