import java.awt.*;
public class CreateGraph {
public static void main(String args[])
{ Choice c;Button B;
Frame f=new Frame();
f.setLayout(new FlowLayout());
B=new Button("多美好的图片呀!");
c=new Choice();
c.addItem("The first");
c.addItem("The second");
c.addItem("The third");
c.addItem("The fourth");
f.pack();
f.show();
}}
有如下错误提示 :
The local variable B is never read 学生成绩管理 CreateGraph.java
请高手给改一下吧。
public class CreateGraph {
public static void main(String args[])
{ Choice c;Button B;
Frame f=new Frame();
f.setLayout(new FlowLayout());
B=new Button("多美好的图片呀!");
c=new Choice();
c.addItem("The first");
c.addItem("The second");
c.addItem("The third");
c.addItem("The fourth");
f.pack();
f.show();
}}
有如下错误提示 :
The local variable B is never read 学生成绩管理 CreateGraph.java
请高手给改一下吧。
f.add(b);
f.add(c);