package com;

public class GetStringIndex {

	public static void main(String[] args) {
		String str ="明月几时有，把酒问青天";
		System.out.println(str);
		int charIndex =str.indexOf("酒");
		System.out.println("字符‘酒’首次出现的索引为："+charIndex);

	}

}

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package com;

public class GetStringIndex {

	public static void main(String[] args) {
		String str ="we are the world";
		System.out.println(str);
		int charIndex =str.indexOf("e");
		System.out.println("字符‘e’首次出现的索引为："+charIndex);
		int charIndex2 =str.indexOf("e",4);
		System.out.println("字符‘e’在索引4之后第一次出现的位置："+charIndex2);

		System.out.println();
		String str2 = "let it go!let it go!";
		System.out.println(str2);
		int index = str2.lastIndexOf("t");
		System.out.println("字符t最后一次出现的位置:"+index);
		int index2 =str2.lastIndexOf("t",14);
		System.out.println("从索引14的位置往前查第一个t出现的位置:"+index2);
		

	}

}