Java 字符串搜索方法indexOf和lastIndexOf。
字符串搜索方法indexOf和lastIndexOf。
实例源码：
源代码：
执行
执行中...
x
1
2
public class Main //来 自 时 代 J a v a 公 众 号 - N o w J a v a . c o m3
4
{5
6
public static void main(String[] args)7
8
{9
10
String letters = "abcdefghijklmabcdefghijklm";11
12
13
// test indexOf to locate a character in a string14
15
System.out.printf(16
17
"'c' is located at index %d\n", letters.indexOf('c'));18
19
System.out.printf(20
21
"'a' is located at index %d\n", letters.indexOf('a', 1));22
23
System.out.printf(24
25
"'$' is located at index %d\n\n", letters.indexOf('$'));26
27
28
// test lastIndexOf to find a character in a string29
30
System.out.printf("Last 'c' is located at index %d\n",31
32
letters.lastIndexOf('c'));33
34
System.out.printf("Last 'a' is located at index %d\n",35
36
letters.lastIndexOf('a', 25));37
38
System.out.printf("Last '$' is located at index %d\n\n",39
/*40
nowjava.com - 时代Java41
*/42
43
letters.lastIndexOf('$'));44
45
46
// test indexOf to locate a substring in a string47
48
System.out.printf("\"def\" is located at index %d\n", 49
50
letters.indexOf("def"));51
52
System.out.printf("\"def\" is located at index %d\n",53
54
letters.indexOf("def", 7));55
56
System.out.printf("\"hello\" is located at index %d\n\n",57
58
letters.indexOf("hello"));59
60
61
// test lastIndexOf to find a substring in a string62
63
System.out.printf("Last \"def\" is located at index %d\n",64
/**代码未完, 请加载全部代码(NowJava.com).**/执行结果：
本文系作者在时代Java发表，未经许可，不得转载。如有侵权，请联系nowjava@qq.com删除。
编辑于
关注时代Java