Java Trivia points

1. To turn a string into an integer, generally in the algorithm involves the calculation of large numbers need to use

Class  test{public static void Main (string[] args) {         strings= "233123"; int i=integer.parseint (s);  Error System.out.println (i) when there are non-numbers in S

2. For the processing of negative numbers, first determine whether it is negative, and then remove the minus sign to calculate, after the calculation and add

Class  test{public static void Main (string[] args) {    strings= " -233123"; int i=integer.parseint (s);//float SOURCEF = S.parsefloat (SOURCESTR); becomes floating point//system.out.println ("Hello world!" +i); char frist = S.charat (0);    Gets the first character of the string   //if (frist== '-') {System.out.println (frist);} Determines whether the first character is a-//system.out.println (frist); String leave = s.substring (1,s.length ()); Intercepts all characters except the first string//system.out.println (leave); String NewS = string.valueof (i);   Turns an integer into a string   System.out.println (NewS);   String add = "-" +s;   Stitching string  //System.out.println (add);}}

3.java Processing of linked lists

Java Trivia points