Java notes 1__ Basic data type/input/output/random number/array

/** Eight basic data Types        boolean        byte short        int        long        char        float        double* /  Public class test1{    publicstaticvoid  main (string[] args) {         long g = 1000L;         float f = 3.14F;         double d = 10.12345d;    }}

Import Java.util.Scanner;  Public class Main {    publicstaticvoid  main (string[] args) {        new Scanner (system.in);         int a = input.nextint ();         int b = input.nextint ();        System.out.println ("a+b =" + (A +B));}    }

ImportJava.util.Random;ImportJava.util.Scanner; Public classMain { Public Static voidMain (string[] args) {/*** Array of three ways: * int x[];//DECLARE First * 2.int[] x = new INT[3];         * 3.int[] x = new int[]{3,4,5};         * 4.int[] x = {1,2,3,4}; * Find array Length: X.length*/Random R=NewRandom (); //returns a pseudo-random number, which is an int value that is evenly distributed between 0 (inclusive) and the specified value (not included) from this random number generator sequence.         intx = R.nextint (10);    SYSTEM.OUT.PRINTLN (x); }}

Java notes 1__ Basic data type/input/output/random number/array