小编get*_*msg的帖子

import java.nio.charset.Charsets在我的类UriCodec.java中,但是当我使用javac(jdk6)编译此类错误时.例如:javac UriCodec.java

错误代码:

import java.nio.charset.Charsets;
                       ^
UriCodec.java:140: Can not find symbol
symbol? Variable Charsets
position? class com.android.exchange.utility.UriCodec
        appendEncoded(builder, s, Charsets.UTF_8, false);
                                  ^
UriCodec.java:144: Can not find symbol
symbol? Variable Charsets
position? class com.android.exchange.utility.UriCodec
        appendEncoded(builder, s, Charsets.UTF_8, true);
                                  ^
UriCodec.java:203: Can not find symbol
symbol? Variable Charsets
position? class com.android.exchange.utility.UriCodec
        return decode(s, false, Charsets.UTF_8);
                                ^
UriCodec.java:214: Can not find symbol
symbol? Method toHexString(byte,boolean)
position? class java.lang.Byte
        sb.append(Byte.toHexString(b, true));
                      ^
5 error

我的课:

import java.nio.charset.Charset;
import java.nio.charset.Charsets;
public abstract class …