Java 实例 - 标签(Label)
Java 教程
· 2019-02-10 17:12:32
Java 中的标签是为循环设计的，是为了在多重循环中方便的使用break 和coutinue 。
以下实例当在循环中使用 break 或 continue 循环时跳到指定的标签处：
Main.java 文件
public class Main {
public static void main(String[] args) {
String strSearch = "This is the string in which you have to search for a substring.";
String substring = "substring";
boolean found = false;
int max = strSearch.length() - substring.length();
testlbl:
for (int i = 0; i <= max; i++) {
int length = substring.length();
int j = i;
int k = 0;
while (length-- != 0) {
if(strSearch.charAt(j++) != substring.charAt(k++)){
continue testlbl;
}
}
found = true;
break testlbl;
}
if (found) {
System.out.println("发现子字符串。");
}
else {
System.out.println("字符串中没有发现子字符串。");
}
}
}
以上代码运行输出结果为：
发现子字符串。
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