JavaBean解釈
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Spring setter ? ? ,setter “JavaBean getter/setter
JavaBean: POJO , :
, public HelloImpl4() {};
private , public, private String message;
setter( ) getter( ) ;
setter , “set” , , “setMesssage”, , “void”;
getter , “get” , boolean “is” , , “getMesssage”,“isOk”;
, , “URL”, setter/getter :“setURL” “getURL”, “Java Bean” 。