CharAtString.java

public class CharAtString{

  public static void main(String[] args){

    String text="One's left brain has nothing rigth./n"

               +  "One's rigth brain has nothing left./n";

    System.out.println("字符串内容: ");

    for(int i=0;i<text.lenth();i++)

      System.out.print(text.charAt(i));

 

    System.out.println("/n第一个left: "+text.indexOf("left"));

    System.out.println("最后一个left:"+text.lastIndexOf("left"));

    char[] charArr=next.toCharArray();

    System.out.println("/n字符串Array内容:");

    for(int i=0;i<charArr.lenth;i++)

      System.out.print(charArr[i]);

  }

}