FileDocCategorySizeDatePackage
StringUtil.javaAPI DocExample1893Mon Dec 29 12:20:34 GMT 2003com.darwinsys.lang

StringUtil

public class StringUtil extends Object
Miscellaneous string utilities: arrayToCommaList - print an array with commas, "and"; subst - simple substitute (like 1-4's String.subst but not RE-based) .

Fields Summary
Constructors Summary
Methods Summary
public static java.lang.StringarrayToCommaList(java.lang.Object[] array)
Format an array of Object as a list with commas, like "apples, oranges, and bananas");

		StringBuffer sb = new StringBuffer();
		for (int i=0; i<array.length; i++) {
			if (i > 0 && i < array.length - 1) {
				sb.append(',");
			}
			if (i > 0) {
				sb.append(' ");
			}
			if (i==(array.length-1)) {
				sb.append("and ");
			}
			sb.append(array[i]);
		}
		return sb.toString();
public static intindexOf(java.lang.StringBuffer sb, java.lang.String str, int fromIndex)
Backwards-compability: StringBuffer.indexOf(String, int) added in JDK 1-4, but we need it here and one of my servers is on JDK 1-3.


		// Reject the impossible at once
		if (sb == null || str == null) {
			throw new IllegalArgumentException(
				"input strings may not be null");
		}
		if (fromIndex < 0) {
			throw new ArrayIndexOutOfBoundsException(
				fromIndex + " is negative");
		}
		if (fromIndex + str.length() > sb.length())
			return -1;

		// OK, hunt and peck.
		int i;
		for ( ; fromIndex < sb.length(); fromIndex++) { 
			boolean foundThisRound = true;
		 	for (i = 0; foundThisRound && i < str.length(); i++) {
				if (sb.charAt(fromIndex + i) != str.charAt(i))
					foundThisRound = false;
			}
			if (foundThisRound)
				return fromIndex;
		}
		return -1;
public static java.lang.Stringsubst(java.lang.String oldStr, java.lang.String newStr, java.lang.String input)
Simple string substitution (not RE-based).

		int where = 0;
		StringBuffer sb = new StringBuffer(input);
		while ((where = StringUtil.indexOf(sb, oldStr, where)) != -1) {
			sb.replace(where, where + oldStr.length(), newStr);
		}
		return sb.toString();