Question

我有39个错误，但在同一件事上都是同样的错误（亲切），我不知道什么是错的！错误都与此类似：

Setup.java:31: error: ')' expected
                                                Selected[0] = (0,0,0);
                                                                ^
Setup.java:31: error: not a statement
                                                Selected[0] = (0,0,0);
                                                                 ^
Setup.java:31: error: ';' expected
                                                Selected[0] = (0,0,0);
                                                                  ^

这真令人困惑，我不知道什么是错的请帮忙！这是我的代码：

import java.awt.color.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class Setup {
    public static void main(String[] args) {
        JFrame f = new JFrame("Test Setup wizard");
        Container a = f.getContentPane();
        a.setBackground(Color.white);
        a.setLayout(new  FlowLayout());
        JLabel question1 = new JLabel("What would you like the background color to be?");
        JButton Next = new JButton("Next");
        String Colors[];
        Colors = new String[]{"black", "blue", "cyan", "darkGray", "gray", "green", "lightGray", "magenta", "orange", "pink", "red", "white", "yellow"};
        JList colors = new JList(Colors);
        colors.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        colors.setLayoutOrientation(JList.VERTICAL);
        JScrollPane listScroller = new JScrollPane(colors);
        f.add(question1);
        f.add(colors);
        f.add(Next);
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setSize(500,500);
        f.setVisible(true);
        final ImageIcon img = new ImageIcon(HardDisk.jpg);
        f.setIconImage(img.getImage());
        Next.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent Ev) {
                    final String selected = colors.getSelectedItem().toString();
                    final Color[] Selected = new Color[1];
                    if (selected == "black") {
                        Selected[0] = (0,0,0);
                    }
                    else if (selected == "blue") {
                        Selected[0] = (0,0,255);
                    }
                    else if (selected == "cyan") {
                        Selected[0] = (0,225,225);
                    }
                    else if (selected == "darkGray") {
                        Selected[0] = (169,169,169);
                    }
                    else if (selected == "gray") {
                        Selected[0] = (128,128,128);
                    }
                    else if (selected == "green") {
                        Selected[0] = (0,255,0);
                    }
                    else if (selected == "lightGray") {
                        Selected[0] = (211,211,211);
                    }
                    else if (selected == "magenta") {
                        Selected[0] = (255,0,255);
                    }
                    else if (selected == "orange") {
                        Selected[0] = (255,165,0);
                    }
                    else if (selected == "pink") {
                        Selected[0] = (255,20,147)
                    }
                    else if (selected == "red") {
                        Selected[0] = (255,0,0);
                    }
                    else if (selected == "white") {
                        Selected[0] = (255,255,255);
                    }
                    else if (selected == "yellow") {
                        Selected[0] = (255,255,0);
                    }
                f.dispose();
                JLabel complete = new JLabel("You are now complete.");
                JFrame f = new JFrame("Complete");
                Container a = f.getContentPane();
                a.setBackground(Selected[0]);
                f.add(complete);
                f.setSize(500,500);
                f.setVisible(true);
                f.setIconImage(img.getImage());
            }
            });
    }
}

任何帮助表示赞赏！谢谢！

注意：此帖已被移动到： HERE. 感谢您的合作

Answer 1

我怀疑你想要类似的东西：

Selected[0] = new Color(0,0,0);

但您还应该阅读this question，因为您目前正在使用==比较字符串引用。说实话，你最好填充Map<String, Color>而不是使用所有if语句。

你也没有明显的理由使用数组而不只是Color类型的简单变量。

Answer 2

嗯，(0, 0, 0)本身并不是一个陈述。

我认为您打算创建一个新的Color对象，例如

Selected[0] = new Color(0, 0, 0);

此外，不要将String值与==运算符进行比较，后者会比较对象引用以确定它们是否是同一个对象。使用equals中的String方法比较String值。

Answer 3

您缺少使用RGB值调用构造函数的Color类：

替换此

Selected[0] = (0,0,0);

带

Selected[0] = new Color(0,0,0);

RGB创建时没有语句错误

3 个答案: