这是一种实现方法：
String tempList; //Create string variable named tempListint lineCount = 0; //Create integer variable named lineCountString sep = ": Temp "; //Create string variable named sep (short for separation) and set it equal to the literal string ":"String space = " "; //Create string variable named space and set it equal to an actual space between textsString maxValueYear = "";String minValueYear = "";double maxValue = 0;double minValue = Double.MAX_VALUE;System.out.println("The following is the provided information from the file input. ");while ((tempList = kb.readLine()) !=null) { //while loop stating that as long as the text file still has values to read (is not null), continue to execute String year = tempList.substring(0, tempList.indexOf(space)); double temp = Double.valueOf(tempList.substring(tempList.indexOf(space), tempList.length())); if (temp > maxValue) { maxValue = temp; maxValueYear = year; } if (temp < minValue) { minValue = temp; minValueYear = year; } System.out.println("Line " + lineCount++ + ": Year " + tempList.replace(space, sep)); //Prints out the line number (lineCount++), the info from the temps.txt file with a ":" between the year and the number (tempList.replace (space,sep)}System.out.println("The minimum temp occured in year " + minValueYear + " and was " + minValue);System.out.println("The maximum temp occured in year " + maxValueYear + " and was " + maxValue);
