分享：一道BT试题

http://topic.csdn.net/u/20070113/21/9287c503-51fb-4979-9935-9d739aaab3ef.html

近日，在下到某公司面试，满怀信心的我重重的载在那份BT试题上。
其中一道：
以下code生成几个String对象
String a= "abc ";
String b= "abc ";
String c=new String( "abc ");
String d=c.intern();

当时在下毫不忧郁的选3。
后来在Java Language Specification/CHAPTER 3/Lexical Structure发现这样一个测试代码，知道错了。

package testPackage;
class Test {
public static void main(String[] args) {
String hello = "Hello ", lo = "lo ";
System.out.print((hello == "Hello ") + " ");
System.out.print((Other.hello == hello) + " ");
System.out.print((other.Other.hello == hello)+ " ");
System.out.print((hello == ( "Hel "+ "lo ")) + " ");
System.out.print((hello == ( "Hel "+lo)) + " ");
System.out.println(hello == ( "Hel "+lo).intern());
}
}
class Other { static String hello = "Hello "; }

学海无崖，顿感羞愧，特此分享。