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1¡¢ ´®²Ù×÷£ºÊ¹ÓÃ×Ö·û´®´æÖüÒ»¸öÓ¢Îľä×Ó“Java is an object oriented programming
language”¡£ÏÔʾ¸Ã¾ä×Ó£¬²¢Ëã³öÿ¸öµ¥´ÊµÄ×ÖĸÊýºÍƽ¾ù×ÖĸÊý£¬²¢°´µ¥´ÊÉýÐòÅÅÁÐÊä³ö£¨²»ÓÃÊý×飬ֻÓô®²Ù×÷£©
public class homework21 {
public static void main(String[] args) {
String java = "Java is an object oriented programming language.";
float sum1= java.length(); //×Ö·û´®³¤¶È48
System.out.println(java); //Êä³ö×Ö·û´®
StringBuffer copyToMe = new StringBuffer();//¶¨Ò建³åÇø
int i = 0;
int number=0;
int length=0;
float sum=0;
char c = java.charAt(i);
//·µ»Ø×Ö·û´®¶ÔÏóÖеÚi¸öλÖõÄ×Ö·û
while(i<sum1)
{
if (c != ' ')
{
if(c=='.')//×îºóÒ»¸öµ¥´ÊµÄÅжÏ
{
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