JAVA¹æ·¶Ñ§Ï°——String×ÖÃæ³£Á¿

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")) + " "); //(1)
System.out.print((hello == ("Hel"+lo)) + " "); //(2)
System.out.println(hello == ("Hel"+lo).intern());
}
}
class Other { static String hello = "Hello"; }
package other;
public class Other { static String hello = "Hello"; }
ÔËÐнá¹ûÈçÏ£º
true true true true false true 
½á¹û½âÊÍ£º
1. ËùÓÐString×ÖÃæÁ¿£¬²»¹ÜÆäËùÔÚµÄclassºÍpackage£¬¶¼ÊÇͬһ¸öString¶ÔÏóµÄÒýÓÃ
2. ¶ÔÓÚ³£Á¿±í´ïʽ¼ÆËãµÄString£¬¶¼ÊÇÔÚ±àÒëÆÚ¼ä¼ÆËãµÄ£¬±»µ±×÷String×ÖÃæÁ¿¿´´ý¡£ÀýÈç(1)ÐÐËùÔڵĴúÂë
3. ¶ÔÓÚÔÚÔËÐÐÆÚÁ¬½ÓµÄString£¬¶¼ÊÇд´½¨µÄ£¬Òò´Ë²»Ïàͬ¡£ÀýÈç(2)ÐÐËùÔڵĴúÂë