为什么这个代码eclipse老报错？解决方案

为什么这个代码eclipse老报错？

Java code

import javax.swing.UIManager;public class LookAndFeelTest {    /**     * @param args     */    public static void main(String[] args) {        // TODO Auto-generated method stubLookAndFeelClass lafc = new LookAndFeelClass();lafc.ViewAll();    }}public class LookAndFeelClass(){    public void ViewAll()    {        UIManager.LookAndFeelInfo[]    infos = UIManager.getInstalledLookAndFeels();        for(int i=0;i<infos.length ;i++)        {            name = infos[i].getName();            className = infos[i].getClassName();            System.out.println(name+className);        }    }    String name = "";    String className = "";}

他貌似说我public class LookAndFeelClass()这个"The public type LookAndFeelClass must be defined in its own filev"不是很明白- - 为什么啊
还说我那个类下边的void“Syntax error on token "void", @ expected” 什么意思啊 。。。。

[解决办法]
LookAndFeel这个类前面多了()，这是一个语法错误，按照下面写就可以了

Java code

public class LookAndFeelClass{    public void ViewAll()    {        UIManager.LookAndFeelInfo[]    infos = UIManager.getInstalledLookAndFeels();        for(int i=0;i<infos.length ;i++)        {            name = infos[i].getName();            className = infos[i].getClassName();            System.out.println(name+className);        }    }    String name = "";    String className = "";}
[解决办法]
第二个类LookAndFeelClass
不能定义成public，或者单独写在另外一个文件
[解决办法]
Java code
    /**     * @param args     */    public static void main(String[] args) {        // TODO Auto-generated method stub        LookAndFeelClass lafc = new LookAndFeelClass();        lafc.ViewAll();    }}  class LookAndFeelClass{    public void ViewAll()    {        UIManager.LookAndFeelInfo[]    infos = UIManager.getInstalledLookAndFeels();        for(int i=0;i<infos.length ;i++)        {            name = infos[i].getName();            className = infos[i].getClassName();            System.out.println(name+className);        }    }    String name = "";    String className = "";}
[解决办法]
貌似一个类只能有一个public类~~
[解决办法]
修饰符去掉class LookAndFeelClass括号去掉
{
   public void ViewAll()
   {
       UIManager.LookAndFeelInfo[]    infos = UIManager.getInstalledLookAndFeels();
       for(int i=0;i<infos.length ;i++)
       {
           name = infos[i].getName();
           className = infos[i].getClassName();
           System.out.println(name+className);
       }
   }
   String name = "";
   String className = "";
}改成这个样子 试试
[解决办法]
一个.java文件多可以写多个类，但是只能有一个类是public 修饰的
[解决办法]
LookAndFeelClass不要()
[解决办法]
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LookAndFeelClass不要()
 

 

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