string和new string

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另一个是char[]对应的常量池中的数据:"abc"string s = new string("

方法1string str1="hello world";//方法2string str2=newstring("

string str1 = "abc"; 与string str2 = new string("abc");的区别?

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[]args){//string-->intstring s="123";intretvalue=newinteger(s)