Display an array in a swing type box

[Scotty Steven]

Hi

I am very new to Java. I am trying to create a swing display of a java keyword array that I have entered, but I'm not sure how to do so. The code so far is as follows:

import javax.swing.*;

public class SearchJavaReservedKeywordList
{
	public static void main(String[] args)
	{
		//declarations
		String[] javaKeyword = {"", "abstract", "assert", "boolean",
			"break", "byte", "case", "catch", "char", " class",
			"const", "continue", "default", "do", "double",
			"else", "enum", "extends", "final", "finally",
			"float", "for", "goto", "if", "implements", "import",
			"instanceof", "int", "interface", "long", "native",
			"new", "package", "private", "protected", "public",
			"return", "short", "static", "strictfp", "super",
			"switch", "synchronized", "this", "throw", "throws",
			"transient", "try", "void", "volatile", "while"};
		String choiceString, keyword;
		int choice, x;
		boolean keywordWasFound = false;

		for(;;) { // Causes an infinite loop due to no (initialization; condition; iteration) being set in for

			choiceString = JOptionPane.showInputDialog(null,
				"Enter 1 to Search for Keyword, or 2 to display the full list (q to quit)",
				"Java Keyword search options", JOptionPane.QUESTION_MESSAGE);
			if((choiceString == "q") || (choiceString == "Q"))
				break; // breaks infinite loop

			choice = Integer.parseInt(choiceString); // Convert String to Integer for switch

			switch(choice) // switch selection statement
			{
				case 1:
					keyword = JOptionPane.showInputDialog(null,
						"Enter the word you would like to search " +
						"in the Java reserved keyword list", "Java Keyword search",
						JOptionPane.QUESTION_MESSAGE);
					for(x = 0; x < javaKeyword.length; ++x)
						if(keyword.equals(javaKeyword[x]))
							keywordWasFound = true;

					if(keywordWasFound)
						// Message box for unused keywords
						if(keyword.equals(javaKeyword[10]) || keyword.equals(javaKeyword[22]))
							JOptionPane.showMessageDialog(null, keyword +
								" is a Java reserved keyword, but it is currently not "
								+ " used in Java programming.", "Search results",
								JOptionPane.INFORMATION_MESSAGE);
						else
							// Error message if box null
							if(keyword.equals(javaKeyword[0]))
								JOptionPane.showMessageDialog(null, "Please type a word before pressing"
									+ " the enter key or clicking OK.", "Search results",
									JOptionPane.ERROR_MESSAGE);
						else
							//Message box if word is a reserved keyword
							JOptionPane.showMessageDialog(null, keyword +
								" is a Java reserved keyword.", "Search results",
								JOptionPane.INFORMATION_MESSAGE);
					else
						//Message box if word is not a Java reserved keyword
						JOptionPane.showMessageDialog(null, keyword +
							" was not found in the list of Java reserved Keyword.",
							"Search results", JOptionPane.INFORMATION_MESSAGE);
					break;
				case 2:
                 // Display all keywords in array
			}//end switch
		} // end do-while loop
	} //end main()

} // end class

What I would like to do is under the switch case 2, have a list of all the array elemets (except 0) display on either a table type format (5 columns, 10 rows), or just some neat list format inside a swing dialog box. Any help would be appreciated.

[Paul Clapham]

The obvious way to display a "list" in a Swing GUI is via a... JList. Have a look through the Swing tutorial -- that should give you a better start than what you have so far.

[Scotty Steven]

This code looks a little more involved then what I was hoping to achieve. I do not want to select anything from the list. I just want it to display the list on the screen. I am a beginner, and that code is too advanced for me.

[Michael Dunn]

> This code looks a little more involved then what I was hoping to achieve.

doesn't get much easier than one line of code

"f.getContentPane().add(new JScrollPane(new JList(javaKeyword)));"

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class Testing
{
  public void buildGUI()
  {
    String[] javaKeyword = {"", "abstract", "assert", "boolean",
      "break", "byte", "case", "catch", "char", " class",
      "const", "continue", "default", "do", "double",
      "else", "enum", "extends", "final", "finally",
      "float", "for", "goto", "if", "implements", "import",
      "instanceof", "int", "interface", "long", "native",
      "new", "package", "private", "protected", "public",
      "return", "short", "static", "strictfp", "super",
      "switch", "synchronized", "this", "throw", "throws",
      "transient", "try", "void", "volatile", "while"};

    JFrame f = new JFrame();
    f.getContentPane().add(new JScrollPane(new JList(javaKeyword)));
    f.setSize(100,300);
    f.setLocationRelativeTo(null);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
  }
  public static void main(String[] args)
  {
    SwingUtilities.invokeLater(new Runnable(){
      public void run(){
        new Testing().buildGUI();
      }
    });
  }
}

[Scotty Steven]

@Michael Dunn

Thanks. This gives me something to study and learn from. You rock!