在Java编程中,如何查找字符串中特定单词的最后一个索引?
以下示例演示如何使用Matlass
类的matchet.find()
方法和Pattern
类的Patter.compile()
方法查找字符串中指定词组最后一个出现的索引。
package com.yiibai;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class LastIndexWord {
public static void main(String args[]) {
String candidateString = "This is a Java example.This is another Java example.";
Pattern p = Pattern.compile("Java");
Matcher matcher = p.matcher(candidateString);
matcher.find();
int nextIndex = matcher.end();
System.out.print("The last index of Java is:");
System.out.println(nextIndex);
}
}
上述代码示例将产生以下结果 -
The last index of Java is:14
示例-2
以下是另一个示例,用来计算字符串中指定单词的最后一个出现的索引。
package com.yiibai;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class LastIndexWord2 {
public static void main(String args[]) {
String s1 = "Java is the one of best languagues, I like Java.";
Pattern p1 = Pattern.compile("Java");
Matcher m1 = p1.matcher(s1);
m1.find();
int nextIndex = m1.end();
System.out.print("The last index is:");
System.out.println(nextIndex);
}
}
上述代码示例将产生以下结果 -
The last index is:4