任意对象转化为JSON代码,Java代码库,德仔网

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【Java】任意对象转化为JSON
作者: / 发布于2011/1/14/ 479
<div><span style="color: #0000ff">import</span><span style="color: #000000"> java.beans.IntrospectionException;
 </span><span style="color: #0000ff">import</span><span style="color: #000000"> java.beans.Introspector;
 </span><span style="color: #0000ff">import</span><span style="color: #000000"> java.beans.PropertyDescriptor;
 </span><span style="color: #0000ff">import</span><span style="color: #000000"> java.math.BigDecimal;
 </span><span style="color: #0000ff">import</span><span style="color: #000000"> java.math.BigInteger;
 </span><span style="color: #0000ff">import</span><span style="color: #000000"> java.util.List;
 </span><span style="color: #0000ff">import</span><span style="color: #000000"> java.util.Map;
 </span><span style="color: #0000ff">import</span><span style="color: #000000"> java.util.Set;
 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * 序列化对象为JSON格式 遵循JSON组织公布标准
 * 
 * @date 2008/05/07
 * </span><span style="color: #808080">@version</span><span style="color: #008000"> 1.0.0
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">class</span><span style="color: #000000"> Json {
 </span><span style="color: #008000">/**</span><span style="color: #008000"> Commons Logging instance. </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">private</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> org.apache.commons.logging.Log log </span><span style="color: #000000">=</span><span style="color: #000000"> org.apache.commons.logging.LogFactory.getLog(Json.</span><span style="color: #0000ff">class</span><span style="color: #000000">);
 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> obj 任意对象
 * </span><span style="color: #808080">@return</span><span style="color: #008000"> String
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> String object2json(Object obj) {
 StringBuilder json </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> StringBuilder();
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (obj </span><span style="color: #000000">==</span><span style="color: #000000"> </span><span style="color: #0000ff">null</span><span style="color: #000000">) {
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">\"\"</span><span style="color: #000000">"</span><span style="color: #000000">);
 } </span><span style="color: #0000ff">else</span><span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000"> (obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> String </span><span style="color: #000000">||</span><span style="color: #000000"> obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> Integer </span><span style="color: #000000">||</span><span style="color: #000000"> obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> Float </span><span style="color: #000000">||</span><span style="color: #000000"> obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> Boolean
 </span><span style="color: #000000">||</span><span style="color: #000000"> obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> Short </span><span style="color: #000000">||</span><span style="color: #000000"> obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> Double </span><span style="color: #000000">||</span><span style="color: #000000"> obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> Long </span><span style="color: #000000">||</span><span style="color: #000000"> obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> BigDecimal
 </span><span style="color: #000000">||</span><span style="color: #000000"> obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> BigInteger </span><span style="color: #000000">||</span><span style="color: #000000"> obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> Byte) {
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">\"</span><span style="color: #000000">"</span><span style="color: #000000">).append(string2json(obj.toString())).append(</span><span style="color: #000000">"</span><span style="color: #000000">\"</span><span style="color: #000000">"</span><span style="color: #000000">);
 } </span><span style="color: #0000ff">else</span><span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000"> (obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> Object[]) {
 json.append(array2json((Object[]) obj));
 } </span><span style="color: #0000ff">else</span><span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000"> (obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> List) {
 json.append(list2json((List</span><span style="color: #000000"><?></span><span style="color: #000000">) obj));
 } </span><span style="color: #0000ff">else</span><span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000"> (obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> Map) {
 json.append(map2json((Map</span><span style="color: #000000"><?</span><span style="color: #000000">, </span><span style="color: #000000">?></span><span style="color: #000000">) obj));
 } </span><span style="color: #0000ff">else</span><span style="color: #000000"> </span><span style="color: #0000ff">if</span><span style="color: #000000"> (obj </span><span style="color: #0000ff">instanceof</span><span style="color: #000000"> Set) {
 json.append(set2json((Set</span><span style="color: #000000"><?></span><span style="color: #000000">) obj));
 } </span><span style="color: #0000ff">else</span><span style="color: #000000"> {
 json.append(bean2json(obj));
 }
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> json.toString();
 }
 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> bean bean对象
 * </span><span style="color: #808080">@return</span><span style="color: #008000"> String
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> String bean2json(Object bean) {
 StringBuilder json </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> StringBuilder();
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">{</span><span style="color: #000000">"</span><span style="color: #000000">);
 PropertyDescriptor[] props </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">null</span><span style="color: #000000">;
 </span><span style="color: #0000ff">try</span><span style="color: #000000"> {
 props </span><span style="color: #000000">=</span><span style="color: #000000"> Introspector.getBeanInfo(bean.getClass(), Object.</span><span style="color: #0000ff">class</span><span style="color: #000000">).getPropertyDescriptors();
 } </span><span style="color: #0000ff">catch</span><span style="color: #000000"> (IntrospectionException e) {
 }
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (props </span><span style="color: #000000">!=</span><span style="color: #000000"> </span><span style="color: #0000ff">null</span><span style="color: #000000">) {
 </span><span style="color: #0000ff">for</span><span style="color: #000000"> (</span><span style="color: #0000ff">int</span><span style="color: #000000"> i </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">0</span><span style="color: #000000">; i </span><span style="color: #000000"><</span><span style="color: #000000"> props.length; i</span><span style="color: #000000">++</span><span style="color: #000000">) {
 </span><span style="color: #0000ff">try</span><span style="color: #000000"> {
 String name </span><span style="color: #000000">=</span><span style="color: #000000"> object2json(props[i].getName());
 String value </span><span style="color: #000000">=</span><span style="color: #000000"> object2json(props[i].getReadMethod().invoke(bean));
 json.append(name);
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">:</span><span style="color: #000000">"</span><span style="color: #000000">);
 json.append(value);
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">,</span><span style="color: #000000">"</span><span style="color: #000000">);
 } </span><span style="color: #0000ff">catch</span><span style="color: #000000"> (Exception e) {
 }
 }
 json.setCharAt(json.length() </span><span style="color: #000000">-</span><span style="color: #000000"> </span><span style="color: #000000">1</span><span style="color: #000000">, </span><span style="color: #000000">'</span><span style="color: #000000">}</span><span style="color: #000000">'</span><span style="color: #000000">);
 } </span><span style="color: #0000ff">else</span><span style="color: #000000"> {
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">}</span><span style="color: #000000">"</span><span style="color: #000000">);
 }
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> json.toString();
 }
 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> list list对象
 * </span><span style="color: #808080">@return</span><span style="color: #008000"> String
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> String list2json(List</span><span style="color: #000000"><?></span><span style="color: #000000"> list) {
 StringBuilder json </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> StringBuilder();
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">[</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (list </span><span style="color: #000000">!=</span><span style="color: #000000"> </span><span style="color: #0000ff">null</span><span style="color: #000000"> </span><span style="color: #000000">&&</span><span style="color: #000000"> list.size() </span><span style="color: #000000">></span><span style="color: #000000"> </span><span style="color: #000000">0</span><span style="color: #000000">) {
 </span><span style="color: #0000ff">for</span><span style="color: #000000"> (Object obj : list) {
 json.append(object2json(obj));
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">,</span><span style="color: #000000">"</span><span style="color: #000000">);
 }
 json.setCharAt(json.length() </span><span style="color: #000000">-</span><span style="color: #000000"> </span><span style="color: #000000">1</span><span style="color: #000000">, </span><span style="color: #000000">'</span><span style="color: #000000">]</span><span style="color: #000000">'</span><span style="color: #000000">);
 } </span><span style="color: #0000ff">else</span><span style="color: #000000"> {
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">]</span><span style="color: #000000">"</span><span style="color: #000000">);
 }
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> json.toString();
 }
 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> array 对象数组
 * </span><span style="color: #808080">@return</span><span style="color: #008000"> String
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> String array2json(Object[] array) {
 StringBuilder json </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> StringBuilder();
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">[</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (array </span><span style="color: #000000">!=</span><span style="color: #000000"> </span><span style="color: #0000ff">null</span><span style="color: #000000"> </span><span style="color: #000000">&&</span><span style="color: #000000"> array.length </span><span style="color: #000000">></span><span style="color: #000000"> </span><span style="color: #000000">0</span><span style="color: #000000">) {
 </span><span style="color: #0000ff">for</span><span style="color: #000000"> (Object obj : array) {
 json.append(object2json(obj));
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">,</span><span style="color: #000000">"</span><span style="color: #000000">);
 }
 json.setCharAt(json.length() </span><span style="color: #000000">-</span><span style="color: #000000"> </span><span style="color: #000000">1</span><span style="color: #000000">, </span><span style="color: #000000">'</span><span style="color: #000000">]</span><span style="color: #000000">'</span><span style="color: #000000">);
 } </span><span style="color: #0000ff">else</span><span style="color: #000000"> {
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">]</span><span style="color: #000000">"</span><span style="color: #000000">);
 }
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> json.toString();
 }
 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> map map对象
 * </span><span style="color: #808080">@return</span><span style="color: #008000"> String
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> String map2json(Map</span><span style="color: #000000"><?</span><span style="color: #000000">, </span><span style="color: #000000">?></span><span style="color: #000000"> map) {
 StringBuilder json </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> StringBuilder();
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">{</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (map </span><span style="color: #000000">!=</span><span style="color: #000000"> </span><span style="color: #0000ff">null</span><span style="color: #000000"> </span><span style="color: #000000">&&</span><span style="color: #000000"> map.size() </span><span style="color: #000000">></span><span style="color: #000000"> </span><span style="color: #000000">0</span><span style="color: #000000">) {
 </span><span style="color: #0000ff">for</span><span style="color: #000000"> (Object key : map.keySet()) {
 json.append(object2json(key));
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">:</span><span style="color: #000000">"</span><span style="color: #000000">);
 json.append(object2json(map.get(key)));
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">,</span><span style="color: #000000">"</span><span style="color: #000000">);
 }
 json.setCharAt(json.length() </span><span style="color: #000000">-</span><span style="color: #000000"> </span><span style="color: #000000">1</span><span style="color: #000000">, </span><span style="color: #000000">'</span><span style="color: #000000">}</span><span style="color: #000000">'</span><span style="color: #000000">);
 } </span><span style="color: #0000ff">else</span><span style="color: #000000"> {
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">}</span><span style="color: #000000">"</span><span style="color: #000000">);
 }
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> json.toString();
 }
 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> set 集合对象
 * </span><span style="color: #808080">@return</span><span style="color: #008000"> String
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> String set2json(Set</span><span style="color: #000000"><?></span><span style="color: #000000"> set) {
 StringBuilder json </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> StringBuilder();
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">[</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (set </span><span style="color: #000000">!=</span><span style="color: #000000"> </span><span style="color: #0000ff">null</span><span style="color: #000000"> </span><span style="color: #000000">&&</span><span style="color: #000000"> set.size() </span><span style="color: #000000">></span><span style="color: #000000"> </span><span style="color: #000000">0</span><span style="color: #000000">) {
 </span><span style="color: #0000ff">for</span><span style="color: #000000"> (Object obj : set) {
 json.append(object2json(obj));
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">,</span><span style="color: #000000">"</span><span style="color: #000000">);
 }
 json.setCharAt(json.length() </span><span style="color: #000000">-</span><span style="color: #000000"> </span><span style="color: #000000">1</span><span style="color: #000000">, </span><span style="color: #000000">'</span><span style="color: #000000">]</span><span style="color: #000000">'</span><span style="color: #000000">);
 } </span><span style="color: #0000ff">else</span><span style="color: #000000"> {
 json.append(</span><span style="color: #000000">"</span><span style="color: #000000">]</span><span style="color: #000000">"</span><span style="color: #000000">);
 }
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> json.toString();
 }
 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> s 参数
 * </span><span style="color: #808080">@return</span><span style="color: #008000"> String
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> String string2json(String s) {
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (s </span><span style="color: #000000">==</span><span style="color: #000000"> </span><span style="color: #0000ff">null</span><span style="color: #000000">)
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> </span><span style="color: #000000">""</span><span style="color: #000000">;
 StringBuilder sb </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> StringBuilder();
 </span><span style="color: #0000ff">for</span><span style="color: #000000"> (</span><span style="color: #0000ff">int</span><span style="color: #000000"> i </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">0</span><span style="color: #000000">; i </span><span style="color: #000000"><</span><span style="color: #000000"> s.length(); i</span><span style="color: #000000">++</span><span style="color: #000000">) {
 </span><span style="color: #0000ff">char</span><span style="color: #000000"> ch </span><span style="color: #000000">=</span><span style="color: #000000"> s.charAt(i);
 </span><span style="color: #0000ff">switch</span><span style="color: #000000"> (ch) {
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">"</span><span style="color: #000000">'</span><span style="color: #000000">:
 sb.append(</span><span style="color: #000000">"</span><span style="color: #000000">\\\"</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">\\</span><span style="color: #000000">'</span><span style="color: #000000">:
 sb.append(</span><span style="color: #000000">"</span><span style="color: #000000">\\\\</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">\b</span><span style="color: #000000">'</span><span style="color: #000000">:
 sb.append(</span><span style="color: #000000">"</span><span style="color: #000000">\\b</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">\f</span><span style="color: #000000">'</span><span style="color: #000000">:
 sb.append(</span><span style="color: #000000">"</span><span style="color: #000000">\\f</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">\n</span><span style="color: #000000">'</span><span style="color: #000000">:
 sb.append(</span><span style="color: #000000">"</span><span style="color: #000000">\\n</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">\r</span><span style="color: #000000">'</span><span style="color: #000000">:
 sb.append(</span><span style="color: #000000">"</span><span style="color: #000000">\\r</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">\t</span><span style="color: #000000">'</span><span style="color: #000000">:
 sb.append(</span><span style="color: #000000">"</span><span style="color: #000000">\\t</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">/</span><span style="color: #000000">'</span><span style="color: #000000">:
 sb.append(</span><span style="color: #000000">"</span><span style="color: #000000">\\/</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">default</span><span style="color: #000000">:
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (ch </span><span style="color: #000000">>=</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">\u0000</span><span style="color: #000000">'</span><span style="color: #000000"> </span><span style="color: #000000">&&</span><span style="color: #000000"> ch </span><span style="color: #000000"><=</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">\u001F</span><span style="color: #000000">'</span><span style="color: #000000">) {
 String ss </span><span style="color: #000000">=</span><span style="color: #000000"> Integer.toHexString(ch);
 sb.append(</span><span style="color: #000000">"</span><span style="color: #000000">\\u</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">for</span><span style="color: #000000"> (</span><span style="color: #0000ff">int</span><span style="color: #000000"> k </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">0</span><span style="color: #000000">; k </span><span style="color: #000000"><</span><span style="color: #000000"> </span><span style="color: #000000">4</span><span style="color: #000000"> </span><span style="color: #000000">-</span><span style="color: #000000"> ss.length(); k</span><span style="color: #000000">++</span><span style="color: #000000">) {
 sb.append(</span><span style="color: #000000">'</span><span style="color: #000000">0</span><span style="color: #000000">'</span><span style="color: #000000">);
 }
 sb.append(ss.toUpperCase());
 } </span><span style="color: #0000ff">else</span><span style="color: #000000"> {
 sb.append(ch);
 }
 }
 }
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> sb.toString();
 }
 }

</span></div>
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