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IPアドレス4オクテット目変更
sample.java
private static String changeFourOctetIpAddress(final String ipAddress, final String fourOctet) {
//カンマ区切りで取得
final String[] split = ipAddress.split("\\.");
return String.format("%s.%s.%s.%s", split[0], split[1], split[2], fourOctet);
}
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