如何将字符串格式转换为Java格式

Question

I am developing a wizard page. In that page i am converting a file into String and displaying it in the text box

But I want to display the text in a java format I have tried with the below code

import org.eclipse.jdt.core.ToolFactory;
import org.eclipse.jdt.core.formatter.CodeFormatter;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
import org.eclipse.text.edits.MalformedTreeException;
import org.eclipse.text.edits.TextEdit;
    public class FormatterTest {
        public static void main(String[] args) {
            String code = pagehandlerContent; //the file which im getting and saving it in string
            CodeFormatter codeFormatter = ToolFactory.createCodeFormatter(null);
            TextEdit textEdit = codeFormatter.format(CodeFormatter.K_COMPILATION_UNIT, code, 0, code.length(), 0, null);
            IDocument doc = new Document(code);
            try {
                textEdit.apply(doc);
                System.out.println(doc.get());
            } catch (MalformedTreeException e) {
                e.printStackTrace();
            } catch (BadLocationException e) {
                e.printStackTrace();
            }
        }
    }

but I am getting null pointer exception at textEdit.apply(doc) line pagehandlercontent contains a file which is converted into string format textEdit.apply(doc) is not accepting some special characters. that is the reason im getting null pointer exception. Is there any other way to do it?

Answer 1

Have you tried using the following:

import org.apache.commons.lang3.StringEscapeUtils;

StringEscapeUtils.escapeJava(string)