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      String str="Java string split test";
      String[] strarray=str.split(" ");
      for (int i = 0; i < strarray.length; i++)
          System.out.println(strarray[i]);
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      String str="Java string split test";
      String[] strarray=str.split(" ",2);//ʹÓÃlimit£¬×î¶à·Ö¸î³É2¸ö×Ö·û´®
      for (int i = 0; i < strarray.length; i++)
          System.out.println(strarray[i]);
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      String str="192.168.0.1";
      String[] strarray=str.split(".");
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          System.out.println(strarray[i]);
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