java 判断字符串是否包含子串的方法
方法一：
string str1 = "nihaoksdoksad "; string str2 = "ok "; int total = 0; for (string tmp = str1; tmp != null&&tmp.length()> =str2.length();){ if(tmp.indexof(str2) == 0){ total ++; } tmp = tmp.substring(1); } system.out.println(str1+ "中含有 "+total+ "个 "+str2);
方法二：
string str1 = "nihaokokosdokosad "; string str2 = "oko "; int total = 0; for (string tmp = str1; tmp != null&&tmp.length()> =str2.length();){ if(tmp.indexof(str2) == 0){ total ++; tmp = tmp.substring(str2.length()); }else{ tmp = tmp.substring(1); } } system.out.println(str1+ "中含有 "+total+ "个 "+str2);
方法三：
string str1 = "nihaoksdoksad "; char []c=str1.tochararray(); int total=0; for(int i=0;i <c.length-1;i++) if(c[i]== 'o '&&c[i+1]== 'k ') total++; system.out.println(str1+ "中含有 "+total+ "个ok ");
以上就是java如何判断字符串是否包含子串的示例分享的详细内容。