题目内容
String字符串是不可修改的，它的连接、取子串、替换都会生成新的字符串，原子符串不变public class Test{ public static void main(String args[]){String str="ABCDEF";str.substring(3);str.concat("XYZ");System.out.print(str);}}程序运行结果：
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Sonia, we are ________ informed, loves her family very much.
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