如果是 “字符串数组” 转 “字符串”，只能通过循环，没有其它方法

String[] str = {"abc", "bcd", "def"};StringBuffer sb = new StringBuffer();for(int i = 0; i < str.length; i++){ sb. append(str[i]);}String s = sb.toString();

如果是 “字符数组” 转 “字符串” 可以通过下边的方法

char[]   data={'a','b','c'};   String  s=new   String(data);

//字符数组转List

String[] s = {"a","b","c"};List list= java.util.Arrays.asList(s);

 

//List转字符数组——例子一

List
     
       list = new ArrayList
      
       ();list.add("a1");list.add("a2");String[] toBeStored = list.toArray(new String[list.size()]);for(String s : toBeStored) {System.out.println(s);}
      
     

 

//List转字符数组——例子二

List
     
       list = new ArrayList
      
       ();list.add("a1");list.add("a2");String[] toBeStored = new String[al.size()];list.toArray(toBeStored);for (String s : toBeStored) {System.out.println(s);}
      
     

//List转字符数组——例子三

List
     
       list = new ArrayList
      
       ();list.add("a1");list.add("a2");String[] toBeStored = new String[]{};String[] str = al.toArray(toBeStored);for (String s : str) {System.out.println(s);}
      
     

利用此转化：String str[] = list.toArray(new String[]{}); 

List list= java.util.Arrays.asList(String str[]);