请教高手一个<<thinking in java >>里的问题.我为什么编译这个程序时会出现这个问题呢,不好意思呢,,我是新手,,多谢赐教啊,,我是在JB9里运行的,,是否跟这有??package a.k;
import com.bruceeckel.simpletest.*;class Number {
int i;
}public class Assignment {
static Test monitor =new Test(); public static void main(String[] args) {
Number n1=new Number ();
Number n2=new Number ();
n1.i=9;
n2.i=47;
System.out.println("1:n1.i:"+n1.i+",n2.i:"+n2.i) ;
n1=n2;
System.out.println("2:n1.i:"+n1.i+",n2.i:"+n2.i) ;
n1.i=27;
System.out.println("3:n1.i:"+n1.i+",n2.i:"+n2.i) ;
monitor.expect(new String[]{
"1:n1.i: 9,n2.i: 47",
"2:n1.i: 47,n2.i: 47",
"3:n1.i: 27,n2.i: 27"
});
}
}编译上面程序时。它会出现下面这些错误呢,,"Assignment.java": package com.bruceeckel.simpletest does not exist at line 2, column 1
"Assignment.java": cannot resolve symbol: class Test in class a.k.Assignment at line 9, column 10
"Assignment.java": cannot resolve symbol: class Test in class a.k.Assignment at line 9, column 28
import com.bruceeckel.simpletest.*;class Number {
int i;
}public class Assignment {
static Test monitor =new Test(); public static void main(String[] args) {
Number n1=new Number ();
Number n2=new Number ();
n1.i=9;
n2.i=47;
System.out.println("1:n1.i:"+n1.i+",n2.i:"+n2.i) ;
n1=n2;
System.out.println("2:n1.i:"+n1.i+",n2.i:"+n2.i) ;
n1.i=27;
System.out.println("3:n1.i:"+n1.i+",n2.i:"+n2.i) ;
monitor.expect(new String[]{
"1:n1.i: 9,n2.i: 47",
"2:n1.i: 47,n2.i: 47",
"3:n1.i: 27,n2.i: 27"
});
}
}编译上面程序时。它会出现下面这些错误呢,,"Assignment.java": package com.bruceeckel.simpletest does not exist at line 2, column 1
"Assignment.java": cannot resolve symbol: class Test in class a.k.Assignment at line 9, column 10
"Assignment.java": cannot resolve symbol: class Test in class a.k.Assignment at line 9, column 28
解决方案 »
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是作者自己定义的包,你机器上又没有,不能直接import的
里边的Test类当然也就不能用了作者使用函数monitor.expect()只是为了让读者给从程序中就看到运行的结果([]{
"1:n1.i: 9,n2.i: 47",
"2:n1.i: 47,n2.i: 47",
"3:n1.i: 27,n2.i: 27"
});
)而已所以,用不着使用它们
不好意思,,,望指教下,,
在它写的网站上有下吧
import java.io.*;
class number
{
int i;
}
public class assignment
{
public static void main(String [] args)
{
number n1=new number();
number n2=new number();
n1.i=10;
n2.i=20;
System.out.println("1:n1.i="+n1.i+" n2.i="+n2.i);
n1=n2;
System.out.println("2:n1.i="+n1.i+" n2.i="+n2.i);
n2.i=30;
System.out.println("3:n1.i="+n1.i+" n2.i="+n2.i);
}
}