public static void main(String[] args) {

//1.字符数组 转换成 字符串

//(1)直接在构造String时转换

char[] array = new char[] {'a','b','c','d','e','f','g'};

String str = new String(array);

System.out.println(str);

//(2)调用String类的提供的方法的valueOf()

String str2 = String.valueOf(array);

System.out.println(str2);

//2.字符串 转换成 字符数组

//(1)调用String类的提供的方法的toCharArray()

String msg = "i am a good boy!";

char[] dest = msg.toCharArray();

System.out.println(Arrays.toString(dest));

}