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20、分析以下程序，写出运行结果: ABDCBDCB
public class Test20 {
static boolean foo(char c) {
System.out.print(c);
return true;
}
public static void main(String[] args) {
int i = 2;
for (foo(‘A’); foo(‘B’) ;; (i < 4); foo(‘C’)) {
i++;
foo(‘D’);
}
}
}
21．编写程序，要求创建一个Dog类，添加name,eyeColor属性，为该属性自动添加相应的set和get方法，并给出至少两个构造方法。
public class Dog {
private String name, eyeColor;
// 无形参的构造方法
public Dog (){
this. name =”逗逗“;
this. eyeColor = ”黑“;
}
// 有形参的构造方法
public Dog(String name, String eyeColor ){
this. name = name;
this. eyeColor = eyeColor;
}
public String getEyeColor() {
return eyeColor;
}
public void setEyeColor(String eyeColor) {
this.eyeColor = eyeColor;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
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