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public class StringTest {
public static void main(String args[]){
String str = "10.15.202.13 ";
String[] strs = str.split("\\.");
System.out.println("-----------------获取前两段字符:"+ strs[0] + "." + strs[1]+"-----------");
System.out.println("-----------------获取最后两段字符:"+ strs[strs.length-2] + "." + strs[strs.length-1]+"------------");
}
}