这个布隆过滤器好像没啥用啊,实战用它判断不是炸了

import com.google.common.hash.BloomFilter;
import com.google.common.hash.Funnels;

import java.nio.charset.Charset;

public class Test1 {

public static void main(String[] args) {
int count = 0;
BloomFilter<String> bf = null;
int expectedInsertions = 0;
//expectedInsertions为1000
expectedInsertions=1000;
bf = BloomFilter.create(
Funnels.stringFunnel(Charset.forName("utf-8")),expectedInsertions);
for (int i = 0; i < 100000; i++) {
bf.put(String.valueOf(i));
}
for (int i = 0; i < 1000; i++) {
boolean isExist = bf.mightContain(String.valueOf("imooc"+i));
if(isExist){
count++;
}
}
System.out.println("长度为"+expectedInsertions+",count="+count);
count = 0;

expectedInsertions=10000;
bf = BloomFilter.create(
Funnels.stringFunnel(Charset.forName("utf-8")),expectedInsertions);
for (int i = 0; i < 100000; i++) {
bf.put(String.valueOf(i));
}
for (int i = 0; i < 1000; i++) {
boolean isExist = bf.mightContain(String.valueOf("imooc"+i));
if(isExist){
count++;
}
}
System.out.println("长度为"+expectedInsertions+",count="+count);
count = 0;

expectedInsertions=100000;
bf = BloomFilter.create(
Funnels.stringFunnel(Charset.forName("utf-8")),expectedInsertions);
for (int i = 0; i < 100000; i++) {
bf.put(String.valueOf(i));
}
for (int i = 0; i < 1000; i++) {
boolean isExist = bf.mightContain(String.valueOf("imooc"+i));
if(isExist){
count++;
}
}
System.out.println("长度为"+expectedInsertions+",count="+count);
count = 0;

expectedInsertions=1000000;
bf = BloomFilter.create(
Funnels.stringFunnel(Charset.forName("utf-8")),expectedInsertions);
for (int i = 0; i < 100000; i++) {
bf.put(String.valueOf(i));
}
for (int i = 0; i < 1000; i++) {
boolean isExist = bf.mightContain(String.valueOf("imooc"+i));
if(isExist){
count++;
}
}
System.out.println("长度为"+expectedInsertions+",count="+count);
count = 0;
}
}