史上最全Java面试题整理（附参考答案）

<span class="hljs-keyword">private <span class="hljs-keyword">static <span class="hljs-keyword">final String UTF_8 = <span class="hljs-string">"UTF-8";
<span class="hljs-keyword">private <span class="hljs-keyword">static CharsetEncoder encoder = Charset.forName(UTF_8).newEncoder();
<span class="hljs-keyword">private <span class="hljs-keyword">static CharsetDecoder decoder = Charset.forName(UTF_8).newDecoder();

<span class="hljs-function"&gt;<span class="hljs-keyword"&gt;private <span class="hljs-title"&gt;CharsetHelper<span class="hljs-params"&gt;() {
}

<span class="hljs-function"&gt;<span class="hljs-keyword"&gt;public <span class="hljs-keyword"&gt;static ByteBuffer <span class="hljs-title"&gt;encode<span class="hljs-params"&gt;(CharBuffer in) <span class="hljs-keyword"&gt;throws CharacterCodingException{
    <span class="hljs-keyword"&gt;return encoder.encode(in);
}

<span class="hljs-function"&gt;<span class="hljs-keyword"&gt;public <span class="hljs-keyword"&gt;static CharBuffer <span class="hljs-title"&gt;decode<span class="hljs-params"&gt;(ByteBuffer in) <span class="hljs-keyword"&gt;throws CharacterCodingException{
    <span class="hljs-keyword"&gt;return decoder.decode(in);
}

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