Question

eclipse编程的时候提示无法解析为类型

我的eclipse是3.2的版本 jdk是1.54的
在书上的一个例子，源程序如下
package stumng;

import javax.swing.UIManager;
import java.awt.*;

/**
* <p>Title: </p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2005</p>
* <p>Company: </p>
* @author not attributable
* @version 1.0
*/

public class stuMngApp {
boolean packFrame = false;

//Construct the application
public stuMngApp() {
stuInfMng frame = new stuInfMng();
//Validate frames that have preset sizes
//Pack frames that have useful preferred size info, e.g. from their layout
if (packFrame) {
frame.pack();
}
else {
frame.validate();
}
//Center the window
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = frame.getSize();
if (frameSize.height > screenSize.height) {
frameSize.height = screenSize.height;
}
if (frameSize.width > screenSize.width) {
frameSize.width = screenSize.width;
}
frame.setTitle("欢迎进入学生管理系统");
frame.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);
frame.setVisible(true);
}

//Main method
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}
catch(Exception e) {
e.printStackTrace();
}
new stuMngApp();
}
}

提示的错误信息如下：
Exception in thread "main" java.lang.Error: 无法解析的编译问题：
stuInfMng 无法解析为类型
stuInfMng 无法解析为类型

at stumng.stuMngApp.<init>(stuMngApp.java:20)
at stumng.stuMngApp.main(stuMngApp.java:51)

Answer 1

编译器没有指定好.
windows-preference-
java-compiler
指定jdk
然后再编译一下..

Answer 2

错误很明显啊
stuInfMng 不能识别
没有import 或者是写错了

Answer 3

你还需要一个stuInfMng类没定义。很可能你漏了一个stuInfMng.java文件。