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java.lang.Object

java.util.Random
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SecureRandom
public class Random
extends Object
implements Serializable
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Math.random()
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Random
()
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Random
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public Random(long seed) { setSeed(seed); }
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public class PrimerNumber {
public static void main(String[] args) {
int MAX_NUMBER = 100;
boolean[] notPrimer= new boolean[MAX_NUMBER];
for(int i=2;i<=MAX_NUMBER;i++){
if(!notPrimer[i-1]){
for(int j=2*i;j<=MAX_NUMBER;j++){
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