公共類TestRandom {
公共字符串getRandStr(int charCount) {
String charValue =
for(int I = 0;我& ltcharCounti++){
char c =(char)(random nt(0,26)+' a ');
char value+= string . value of(c);
}
返回charValue
}
公共字符串getRandNum(int charCount) {
String charValue =
for(int I = 0;我& ltcharCounti++){
char c =(char)(random nt(0,10)+' 0 ');
char value+= string . value of(c);
}
返回charValue
}
public int randomInt(int from,int to){
Random r = new Random();
return from+r . nextint(to-from);
}
}