publicclassNewClass{publicstaticvoidmain(String[] args){String strSearch ="This is the string in which you have to search for a substring.";String substring ="substring";boolean found =false;int max = strSearch.length()- substring.length();
testlbl:for(int i =0; i <= max; i++){int length = substring.length();int j = i;int k =0;while(length--!=0){if(strSearch.charAt(j++)!= substring.charAt(k++)){continue testlbl;}}
found =true;break testlbl;}if(found){System.out.println("Found the substring .");}else{System.out.println("did not find the substing in the string.");}}}