{"id":921,"date":"2018-09-17T18:25:40","date_gmt":"2018-09-17T09:25:40","guid":{"rendered":"https:\/\/chat-messenger.com\/?p=921"},"modified":"2018-12-23T02:00:59","modified_gmt":"2018-12-22T17:00:59","slug":"string-lpad-rpad","status":"publish","type":"post","link":"https:\/\/chat-messenger.com\/fr\/blog\/java\/chaine-lpad-rpad","title":{"rendered":"Formatage avec Java LPAD, RPAD"},"content":{"rendered":"<h2 class=\"common_title\"><a name=\"0\">Format\u00e9 avec Java LPAD, RPAD. Remplissez les caract\u00e8res sp\u00e9cifi\u00e9s \u00e0 gauche et \u00e0 droite d&#039;une cha\u00eene<\/a><\/h2>\n<p>\n<strong>Java<\/strong>Ensuite, vous pouvez utiliser la fonction SQL pour les cha\u00eenes.<strong>LPAD<\/strong>,,<strong>RPAD<\/strong>Voici un exemple de source qui effectue le m\u00eame processus.<br \/>\nceux-ci sont<strong>format de longueur fixe<\/strong>Tr\u00e8s utile lorsqu&#039;il s&#039;agit de traiter.\n<\/p>\n<ul>\n<li><strong>LPAD<\/strong>...Renvoie une cha\u00eene remplie de caract\u00e8res r\u00e9p\u00e9t\u00e9s sur le c\u00f4t\u00e9 gauche de la cha\u00eene afin que le nombre total de caract\u00e8res corresponde au nombre de chiffres sp\u00e9cifi\u00e9.<\/li>\n<li><strong>RPAD<\/strong>...Remplit et renvoie une cha\u00eene r\u00e9p\u00e9t\u00e9e sur le c\u00f4t\u00e9 droit d&#039;une cha\u00eene afin que le nombre total de caract\u00e8res corresponde au nombre de chiffres sp\u00e9cifi\u00e9.<\/li>\n<\/ul>\n<p><script type=\"text\/javascript\" src=\"https:\/\/chat-messenger.com\/js\/common.js?dd12sssas2223\" charset=\"UTF-8\"><\/script><br \/>\n<script type=\"text\/javascript\"> writePR(); <\/script><\/p>\n<h2 class=\"common_title\"><a name=\"1\">exemple de programme<\/a><\/h2>\n<p><textarea readonly=\"readonly\" style=\"font-size: 13px;height: 400px;\" class=\"src\" onclick=\"this.focus();this.select()\">\/**<br \/>\n * LPAD\u3092\u884c\u3044\u307e\u3059\u3002<br \/>\n * \u6587\u5b57\u5217[str]\u306e\u5de6\u306b\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217[addStr]\u3092[len]\u306b<br \/>\n * \u6e80\u305f\u3059\u307e\u3067\u633f\u5165\u3057\u307e\u3059\u3002<br \/>\n * @param str \u5bfe\u8c61\u6587\u5b57\u5217<br \/>\n * @param len \u88dc\u5145\u3059\u308b\u307e\u3067\u306e\u6841\u6570\uff08LPAD\u3092\u884c\u3063\u305f\u5f8c\u306e\u30b5\u30a4\u30ba\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\uff09<br \/>\n * @param addStr \u633f\u5165\u3059\u308b\u6587\u5b57\u5217<br \/>\n * @return \u5909\u63db\u5f8c\u306e\u6587\u5b57\u5217\u3002<br \/>\n *\/<br \/>\npublic static String lpad(String str, int len, String addStr) {<br \/>\n    return fillString(str, &#8220;L&#8221;, len, addStr);<br \/>\n}<\/p>\n<p>\/**<br \/>\n * Effectuer un RPAD.<br \/>\n * Ajoutez la cha\u00eene sp\u00e9cifi\u00e9e [addStr] \u00e0 droite de la cha\u00eene [str] \u00e0 [len]<br \/>\n * Ins\u00e9rez jusqu&#039;\u00e0 ce qu&#039;il soit plein.<br \/>\n * @param str cha\u00eene cible<br \/>\n * @param len Nombre de chiffres \u00e0 remplir (pr\u00e9cise la taille apr\u00e8s avoir effectu\u00e9 le RPAD)<br \/>\n * @param addStr Cha\u00eene \u00e0 ins\u00e9rer<br \/>\n * @return La cha\u00eene apr\u00e8s conversion.<br \/>\n *\/<br \/>\npublic static String rpad (String str, int len, String addStr) {<br \/>\n    return fillString(str, \u00ab\u00a0R\u00a0\u00bb, len, addStr);<br \/>\n}<\/p>\n<p>\/**<br \/>\n * Ajoutez la cha\u00eene [addStr] \u00e0 ajouter \u00e0 la cha\u00eene [str]<br \/>\n * Ins\u00e9rez \u00e0 [position] jusqu&#039;\u00e0 ce que [len] soit rempli.<br \/>\n *<br \/>\n * *M\u00eame si [str] est nul ou un litt\u00e9ral vide, utilisez [addStr]<br \/>\n * Renvoie le r\u00e9sultat ins\u00e9r\u00e9 jusqu&#039;\u00e0 ce que [len] soit rempli.<br \/>\n * @param str cha\u00eene cible<br \/>\n * @param position Ins\u00e9rer avant \u21d2 L ou l Ins\u00e9rer apr\u00e8s \u21d2 R ou r<br \/>\n * @param len Nombre de chiffres \u00e0 reconstituer<br \/>\n * @param addStr Cha\u00eene \u00e0 ins\u00e9rer<br \/>\n * @return La cha\u00eene apr\u00e8s conversion.<br \/>\n *\/<br \/>\npublic static String fillString (String str, position de la cha\u00eene,<br \/>\n        int len,<br \/>\n        Cha\u00eene addStr) {<br \/>\n    if (addStr == null || addStr.length() == 0) {<br \/>\n        lancer une nouvelle IllegalArgumentException<br \/>\n            (\u00ab La valeur de la cha\u00eene \u00e0 ins\u00e9rer n&#039;est pas valide. addStr= \u00bb+addStr) ;<br \/>\n    }<br \/>\n    si (str == nul) {<br \/>\n        str = \u00ab\u00a0\u00bb\u00a0;<br \/>\n    }<br \/>\n    Tampon StringBuffer = new StringBuffer(str);<br \/>\n    while (len &gt; buffer.length()) {<br \/>\n        if (position.equalsIgnoreCase(&quot;l&quot;)) {<br \/>\n            int sum = buffer.length() + addStr.length();<br \/>\n            si (somme &gt; len) {<br \/>\n                addStr = addStr.substring<br \/>\n                    (0,addStr.length() \u2013 (somme \u2013 len));<br \/>\n                tampon.insert(0, addStr);<br \/>\n            }autre{<br \/>\n                tampon.insert(0, addStr);<br \/>\n            }<br \/>\n        } autre {<br \/>\n            buffer.append(addStr);<br \/>\n        }<br \/>\n    }<br \/>\n    if (buffer.length() == len) {<br \/>\n        return buffer.toString();<br \/>\n    }<br \/>\n    return buffer.toString().substring(0, len);<br \/>\n}<br \/>\n<\/textarea><br \/>\n<\/p>\n<h2 class=\"common_title\"><a name=\"2\">R\u00e9sultat de l&#039;ex\u00e9cution<\/a><\/h2>\n<p>\u25c6Exemple d&#039;ex\u00e9cution<\/p>\n<pre class=\"sample_src\">public static void main(String[] args) { \/\/ Pour lpad. Remplissez les espaces \u00e0 gauche jusqu&#039;\u00e0 atteindre 5 chiffres. String ret = lpad(&quot;abc&quot;, 5 , &quot; &quot;); System.out.println(&quot;&#039;&quot; + ret + &quot;&#039;&quot;); \/\/ Pour rpad. Remplissez les espaces \u00e0 droite jusqu&#039;\u00e0 atteindre 5 chiffres. ret = rpad(&quot;abc&quot;, 5 , &quot; &quot;); System.out.println(&quot;&#039;&quot; + ret + &quot;&#039;&quot;); \/\/ Si nul ret = rpad(null, 5 , &quot; &quot;); System. out .println(&quot;&#039;&quot; + ret + &quot;&#039;&quot;); }\r\n<\/pre>\n<p>\u25c6R\u00e9sultat de sortie<\/p>\n<pre class=\"console\">&#039;abc&#039; &#039;abc&#039; &#039;\r\n<\/pre>","protected":false},"excerpt":{"rendered":"<p>Format\u00e9 avec Java LPAD, RPAD. Remplissez les caract\u00e8res sp\u00e9cifi\u00e9s sur les c\u00f4t\u00e9s gauche et droit d&#039;une cha\u00eene En Java, utilisez la fonction SQL L [\u2026]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":""},"categories":[19],"tags":[],"_links":{"self":[{"href":"https:\/\/chat-messenger.com\/fr\/wp-json\/wp\/v2\/posts\/921"}],"collection":[{"href":"https:\/\/chat-messenger.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chat-messenger.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chat-messenger.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/chat-messenger.com\/fr\/wp-json\/wp\/v2\/comments?post=921"}],"version-history":[{"count":4,"href":"https:\/\/chat-messenger.com\/fr\/wp-json\/wp\/v2\/posts\/921\/revisions"}],"predecessor-version":[{"id":1892,"href":"https:\/\/chat-messenger.com\/fr\/wp-json\/wp\/v2\/posts\/921\/revisions\/1892"}],"wp:attachment":[{"href":"https:\/\/chat-messenger.com\/fr\/wp-json\/wp\/v2\/media?parent=921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chat-messenger.com\/fr\/wp-json\/wp\/v2\/categories?post=921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chat-messenger.com\/fr\/wp-json\/wp\/v2\/tags?post=921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}