java字符串匹配，另种方式对比

//此方法用String中的indexOf(match, i)

public class Checkb {

public static void main(String[] args){
String check = new String("dfAdfAdfwdfA15df6");
String match = new String("A");

int j = 0;
for(int i = 0;i<check.length();){
int m = check.indexOf(match, i);
if(m>=0){
i = i+m+1;
j++;
}
else break;
}

System.out.println("匹配次数为："+(j));

}

}

//此方法先将字符串转化成数组在一一匹配，比较麻烦

public class Checka {

public static void main(String[] args){

String ck = new String("dfAdfAdfwdfA15df6");
String match = new String("f6");

int sm = 0;//小写字母计数
int bm = 0;//大写字母计数
int fc = 0;//非字符数结果
int k=0;//匹配计数

char ca[] = ck.toCharArray();
char mt[] = match.toCharArray();
//计数
for(int i = 0;i<ck.length();i++){
if(ca[i]>='a'&&ca[i]<='z') sm = sm+1;
if(ca[i]>='A'&&ca[i]<='Z') bm = bm+1;
else fc = i+1 - (sm+bm);

}
//实现匹配
for(int m = 0;m<ca.length;m++){

if(ca[m]==mt[0]){
int n = 0;
int j =m;
for(;n<mt.length;n++){
if(ca[j]== mt
) j++;
else break;
}
if(n==mt.length) k=k+1;

}
}
System.out.println("大写字母个数"+bm+"小写字母个数"+sm+"非字符个数"+fc);
System.out.println("匹配个数"+k);
}
}