各位请帮忙_急!在线等!-超简单的问题package shiYan;

[BeyondImagine]

为什么是一样的代码在Jbuilder2006中运行没问题,到Eclips中就报错
请帮我看哪错了
package shiYan;
import java.util.*;
public class Map {
public Map(){


}

public static void main(String[] args) {
int i;
int[]a={1,2,3,4,5};
HashMap map=new HashMap;
for( i=0;i<a.length;i++)

{

map.put(new Integer(a[]), new Integer(a[i] * a[i]));

System.out.println("map["+i+"]="+map.get(a[i]));
}

}

}

[fang830422]

把报错的内容发上来!

[zhuixun5506]

什么错误，给出错误信息好不？

不过,你就不能想个好点的类名吗？Map, 容易与jdk中的冲突

[BeyondImagine]

(1)无法解析HashMap
(2)new上有语法错误
(3)put(object,object)属于原始类型HashMap

[BeyondImagine]

错误是:

(1)无法解析HashMap
(2)new上有语法错误
(3)put(object,object)属于原始类型HashMap

[jackxing]

1）HashMap map=new HashMap;
-> HashMap map=new HashMap();

2）map.put(new Integer(a[]), new Integer(a[i] * a[i]));
-> map.put(new Integer(a[i]), new Integer(a[i] * a[i]));

3）System.out.println("map["+i+"]="+map.get(a[i]));
-> System.out.println("map["+i+"]="+map.get(new Integer(a[i])));

[jy02209334]

HashMap map=new HashMap;->HashMap map = new HashMap();
new Integer(a[]) ?? a[i]

[BeyondImagine]

map.put(new Integer(a[i]), new Integer(a[i] * a[i]));

上面这句代码还是有错啊

这句好了HashMap map=new HashMap();

[BeyondImagine]

你能调试一下吗
拜托啊jackxing

[BeyondImagine]

package shiYan;
import java.util.*;
public class Map {
public Map(){


}

public static void main(String[] args) {
int i;
int[]a={1,2,3,4,5};
改动前HashMap map=new HashMap;

改动后:HashMap<Integer, Integer> map=new HashMap<Integer, Integer>();
for( i=0;i<a.length;i++)

{

map.put(new Integer(a[i]), new Integer(a[i] * a[i]));


System.out.println("map["+i+"]="+map.get(a[i]));


//System.out.println("map["+i+"]="+map.get(new Integer(a[i])));


}

}

}
为什么这样改就全没问题呢?请高手解释下
小弟谢了

[jy02209334]

建议用范型.
HashMap<Integer, Integer> map = new HashMap<Integer, Integer>();
int[] a = {1,2,3,4,5};
for(int i=0;i<a.length;i++)
{
map.put(a[i], a[i]*a[i]);
System.out.println("map["+i+"]="+map.get(a[i]));
}