Java Random.nextint () method

public int Nextint (int n)

The function of this method is to generate a random int value that is in the interval of [0,n], which is a random int value between 0 and N, containing 0 without n.

Directly on the code:

 PackageOrg.xiaowu.random.demo;ImportJava.util.Random;Importorg.junit.Test; Public classRandomdemo {@Test Public voidDemo () {Random rnd=NewRandom (); intCode = Rnd.nextint (8999) + 1000; System.out.println ("Code:" +code); } @Test Public voidDemo1 () {Random R=NewRandom (); intNextint =R.nextint (); Random R1=NewRandom (10); intNextInt2 =R1.nextint (); System.out.println ("Nextint:" +nextint); System.out.println ("NextInt2:" +NextInt2); }        /*** Generate decimals for [0,1.0] intervals **/@Test Public voidDemo2 () {Random R=NewRandom (); DoubleD1 =r.nextdouble (); System.out.println ("D1:" +D1); }        /*** Generate decimals for [0,5.0] intervals **/@Test Public voidDemo3 () {Random R=NewRandom (); DoubleD2 = R.nextdouble () * 5; System.out.println ("D1:" +D2); }        /*** Generate decimals for [1,2.5] intervals **/@Test Public voidDemo4 () {Random R=NewRandom (); DoubleD3 = r.nextdouble () * 1.5 + 1; System.out.println ("D1:" +D3); }        /*** Generate any integer **/@Test Public voidDemo5 () {Random R=NewRandom (); intN1 =R.nextint (); System.out.println ("D1:" +N1); }            /*** integer to generate [0,10] interval **/@Test Public voidDemo6 () {Random R=NewRandom (); intN2 = R.nextint (10); intN3 = Math.Abs (R.nextint ()% 10); System.out.println ("N2:" +n2); System.out.println ("N3:" +N3); }            /*** Generate integers for [0,10] intervals **/@Test Public voidDemo7 () {Random R=NewRandom (); intN3 = R.nextint (11); intN4 = Math.Abs (r.nextint ()% 11); System.out.println ("N3:" +N3); System.out.println ("N4:" +N4); }        /*** Generate integer for [ -3,15] interval **/@Test Public voidDemo8 () {Random R=NewRandom (); intN4 = R.nextint (18)-3; intN5 = Math.Abs (R.nextint ()% 18)-3; System.out.println ("N4:" +N4); System.out.println ("N5:" +N5); }    }

Java Random.nextint () method