Java 数字、字符串、字符数组的互相转换

数字转换为字符串

    int num = 332;
    String str = String.valueOf( num );

字符串转换为数字

    String str = "abcd";
    int num = Integer.parseInt( num );

字符串转化为字符数组

     String str = "acbd";
     char[] ch = str.toCharArray();

字符数组转化为字符串

    char[] ch = { 'a', 'b', 'c' };
    String str = String.valueOf( ch );