//toCharArray()方法 String str = "abc"; char[] arr = str.toCharArray();
字符数组转字符串:
//直接用构造器
char[] arr = new char[]{'a', 'b', 'c'};
String str = new String(arr);

//toCharArray()方法 String str = "abc"; char[] arr = str.toCharArray();
//直接用构造器
char[] arr = new char[]{'a', 'b', 'c'};
String str = new String(arr);