我试图制作一个简单的分割面板java GUI，其中左侧有自定义绘图，右侧有一个按钮，控件等。但是，当我运行代码时，绘图不会出现。不确定我是否也正确设置了面板。
package set07110;
/**
* A String array defined as a static instance variable called data;
*/
public static String[] data = { "Achelous", "Ares", "Clytemnestra", "Eurystheus", "Icarus", "Naiads", "Phlegethon", "Sterope",
"Acheron", "Argo", "Cocytus", "Euterpe", "Io", "Napaeae", "Phosphor", "Stheno", "Achilles", "Argus", };
public static void main(String[] args) { //Print the only two character name
System.out.println("Task 1");
System.out.println("Enter Length: ");
Scanner scan = new Scanner(System.in);
int qualifyingLength = scan.nextInt();
for(String string: data) {
if(!(qualifyingLength == string.length())) {
System.out.println("Try again");
}
else if (qualifyingLength == string.length()) {
System.out.println("The words are: " + string);
}
}
System.out.println("Task 2");
int count = 0; //Identify the three characters where the name ends with "seus"
for (int index = 0; index < data.length; index++) { {
if (data[index].contains("seus")) {
count++;
boolean seus = data[index].contains("seus");
System.out.println("The words containing seus: " + data[index]);
}
}
}
//Print the names with 9 letter that end in "a".
System.out.println("Task 3");
System.out.println("Enter Length: ");
int qualifyingLength1 = scan.nextInt(); // enter a number which indicates how much letter
// do we want in a word
for(String string: data) {
int lastChar = (data.length - 1);
boolean startsWithA = data.charAt(lastChar) == 'a'; //(have to find the last character in a Array of Strings
// and see if the word ends with the character "a" --> (doesn't work)
if(qualifyingLength1 == string.length() ) {
System.out.println("The words are: " + string);
}
}
}