1. String str = "abc";
is equivalent to: char data[] = {'a', 'b', 'c'};
String str = new String(data);
is equivalent to: char data[] = {'a', 'b', 'c'};
String str = new String(data);
调试欢乐多
当要用到某个类时,就有可能使用构造器.你还是DOWN一个JDK帮助文档看看,里面有关于方法,构造函数的初始化等,对你在编程时很有帮助.