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SecureRandom
public class Random
extends Object
implements Serializable
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nextBoolean
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package stone;
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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public class Test {
public static void stringUpd(String str) {
str = str.replace("j", "l");
System.out.println(str);
}

public static void stringBufferUpd(StringBuffer bf) {
bf.append("c");
System.out.println(bf);
}

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