" String ".trim() == "String") !!!!!!!!!!!!!!!!!!!!!
dy18 2002-11-29 04:55:09 if(" String ".trim() == "String")
System.out.println("Equal");
else
System.out.println("Not Equal"); //Not Equal
if( "STRING".toUpperCase() == "STRING")
System.out.println("Equal");
else
System.out.println("Not Equal"); //Equal
if("String".substring(0) == "String")
System.out.println("Equal");
else
System.out.println("Not Equal"); //Equal
后面的注解相应为结果
请大家解释一下这是为什么?????