java中toCharArray方法是做什么用的？

意思是把別的數據轉換成字符數組吧比如說字符串

publicclassreversestring{

publicstaticvoidmain(stringargs[]){

stringoriginalstring;

stringresultstring="";

originalstring=joptionpane.showinputdialog("pleaseinputastring:");

char[]chararray=originalstring.tochararray();

for(inti=chararray.length-1;i>=0;i--){

resultstring+=chararray[i];

}

joptionpane.showmessagedialog(null,resultstring,"reversestring",joptionpane.information_message);

}

}