如何将字符串每个单词的首字符转换成大写

正确答案：
 

答案：
public class Chap53e {
public static void main(String[] args) {
// TODO Auto-generated method stub
//(1)
String string="this is a test of java";
char[] s=string.toCharArray();
int count=0;
for(int i=0;i
if(s[i]=='s')
count++;
System.out.println("s出现了"+count+"次");
//(2)
String str1;
str1=string.substring(string.indexOf('t', 1), string.lastIndexOf('t')+1);
System.out.println("子字符串为"+str1);
//(3)
char[] str=string.toCharArray();
String[] str2=string.split(" ");
//(4)
for(int i=0;i
{ //方法一
str2[i]=String.valueOf(str2[i].charAt(0)).toUpperCase()+str2[i].substring(1);
// 方法二
str2[i]=str2[i].replaceFirst(String.valueOf(str2[i].charAt(0)), String.valueOf(str2[i].charAt(0)).toUpperCase());
System.out.print(str2[i]+" ");
}
//(5)
StringBuffer sbf=new StringBuffer("this is a test of java");
sbf.reverse();
System.out.println(sbf);
for(int i=string.length()-1;i>=0;i--)
System.out.print(string.charAt(i));
//(6)
String[] strs3=string.split(" ");
System.out.println(Arrays.toString(strs3));
}
}

正确答案：