求助java高手，看一下如下代码

来源：百度知道编辑：UC知道时间：2024/06/30 08:34:44

public class ClassifyAge
{
public static void main (String args [])
{

System.out.println ("Welcome to Age Classification Program.");
System.out.print ("Enter age : ");

int age = Keyboard.readInt();

if (age == 0) // for a person born, but not yet having reached first birthday
{
System.out.println ("Person aged " + age + " is a baby.");
}
else if (age <= 12) // for person between 1 and 12
{
System.out.println ("Person aged " + age + " is a child.");
}
else if (12 < age <= 19) // for person between 13 and 19
{
System.out.println ("Person aged " + age + " is a teenager.");
}
else if (19 > age && age <= 65); // for person between 20 and 65
{
System.out.println ("Person aged " + age + " is an adult

public class ClassifyAge
{
public static void main (String args [])
{

System.out.println ("Welcome to Age Classification Program.");
System.out.print ("Enter age : ");

int age = Keyboard.readInt();

if (age == 0) // for a person born, but not yet having reached first birthday
{
System.out.println ("Person aged " + age + " is a baby.");
}
else if (age <= 12) // for person between 1 and 12
{
System.out.println ("Person aged " + age + " is a child.");
}
else if (age>12 && age<=19) // 我就奇怪~你下面都知道这样写
{
System.out.println ("Person aged " + age + " is a teenager.");
}
else if (19 > age && age <= 65); // for person between 20 and 65
{
System.out.println ("Person aged " + age + " is an adult.")

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