public class SentenceSplit { public static String[] split(String str,int firstLineMaxLength) { //attention:if there are sequential break char(like ' ','.','?','!'),this program may not run correctly. String [] lines = {"",""}; if(str.length() <= firstLineMaxLength) { lines[0] = str; return lines; } String oldstr = str; System.out.println(str.length()); // str = str.replace(".", " "); // str = str.replace("?", " "); // str = str.replace("!", " "); String [] words = str.split(" "); int total = 0; for(int i=0;i<words.length;i++) { System.out.print(words[i]+"("+words[i].length()+")"); total += words[i].length(); } System.out.println("total="+total); int sperator=0; int temp=0; for(int i=0;i<words.length;i++) { temp = sperator; if(i>0)sperator++; sperator += words[i].length(); if(sperator > firstLineMaxLength) { sperator = temp; break; } } System.out.println("sperator="+sperator); if(sperator == 0 ) { lines[1] = oldstr; }else { if(sperator < oldstr.length() && sperator < firstLineMaxLength)sperator++; lines[0] = oldstr.substring(0,sperator); lines[1] = oldstr.substring(sperator,str.length()); } System.out.println("sperator="+sperator); // if(lines[1].length() > firstLineMaxLength) // { // String lines2[] = split(lines[1],firstLineMaxLength); // for(int i=0;i<lines2.length;i++) // System.out.println("line"+i+":"+lines2[i]); // }想用递归实现分成多行，还没有实现
return lines; } public static void main(String args[]) { String str = "Have you ever wondered how a website removed the underline that usually acco?"; String lines[] = split(str,31); System.out.println(lines.length+"lines!"); for(int i=0;i<lines.length;i++) System.out.println("line"+i+":"+lines[i]); } }
