创建字符串的方法

public static void main(String[] args) {
        
        // String(char a[]) 方法
        char a[] = {'g','o','o','d'};
        String str = new String(a);
        System.out.println(str);
        
        //String(char a[],int offset,int length) 方法
        char b[] = {'s','t','u','d','e','n','t'};
        String s = new String(b,2,4);
        System.out.println(s);
    }