read Resource as String

ResoureAsStringHelper.java

package be.crydust.findweirdchars;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.nio.charset.StandardCharsets;

/** @see http://stackoverflow.com/questions/309424/read-convert-an-inputstream-to-a-string */
public class ResoureAsStringHelper {

    public static String readResourceAsString8a(Class<?> aClass, String name) {
        try (Reader in = new BufferedReader(new InputStreamReader(aClass.getResourceAsStream(name), StandardCharsets.UTF_8));) {
            StringWriter out = new StringWriter();
            char[] buffer = new char[1024 * 4];
            int n = 0;
            while (-1 != (n = in.read(buffer))) {
                out.write(buffer, 0, n);
            }
            return out.toString();
        } catch (IOException ex) {
            throw new RuntimeException("unexpected: read failed", ex);
        }
    }

    public static String readResourceAsString8b(Class<?> aClass, String name) {
        try (InputStream in = new BufferedInputStream(aClass.getResourceAsStream(name));) {
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024 * 4];
            int length;
            while ((length = in.read(buffer)) != -1) {
                out.write(buffer, 0, length);
            }
            return out.toString("UTF-8");
        } catch (IOException ex) {
            throw new RuntimeException("unexpected: read failed", ex);
        }
    }

    public static String readResourceAsString6(Class<?> aClass, String name) {
        StringWriter out = new StringWriter();
        Reader in = null;
        try {
            in = new BufferedReader(new InputStreamReader(aClass.getResourceAsStream(name), "UTF-8"));
            char[] buffer = new char[1024 * 4];
            int n = 0;
            while (-1 != (n = in.read(buffer))) {
                out.write(buffer, 0, n);
            }
        } catch (UnsupportedEncodingException ex) {
            throw new RuntimeException("impossible: UTF-8 is suported", ex);
        } catch (IOException ex) {
            throw new RuntimeException("unexpected: read failed", ex);
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException ex) {
                    throw new RuntimeException("unlikely: close failed", ex);
                }
            }
        }
        return out.toString();
    }

    public static String readResourceAsString6b(Class<?> aClass, String name) {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        InputStream in = null;
        try {
            in = new BufferedInputStream(aClass.getResourceAsStream(name));
            byte[] buffer = new byte[1024 * 4];
            int length;
            while ((length = in.read(buffer)) != -1) {
                out.write(buffer, 0, length);
            }
            return out.toString("UTF-8");
        } catch (IOException ex) {
            throw new RuntimeException("unexpected: read failed", ex);
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException ex) {
                    throw new RuntimeException("unlikely: close failed", ex);
                }
            }
        }
    }
}