Java数据类型转换
数据类型的分类
字符串<=>字符数组
字符串转换为字符数组
String str = "123456";
char[] chars = str.toCharArray();
字符数组转化为字符串
char[] c = {'a','s','d','4','5',};
String str = new String(c);
字符数组<=>整型数组
字符数组转化为整型数组
char[] c = { '1', '2', '3', '4', '5', };
int[] arr = new int[c.length];
for (int i = 0; i < arr.length; i++) {
a[i] = c[i] - '0';
}
整型数组转化为字符数组
int[] a = {1,2,3,4,5};
char[] c = new char[a.length];
for (int i = 0; i < c.length; i++) {
c[i] = (char) (a[i]+'0');
}
字符串<=>整数
整型数转化为字符串
1.String str = Integer.toString(i);
2.String s = String.valueOf(i);
3.String s = "" + i;
字符串转化为整型数
int i = Integer.valueOf(str).intValue();
int i = Integer.parseInt(String str);
后续补充