File	Doc	Category	Size	Date	Package
PrefixFileFilter.java	API Doc	Android 1.5 API	7135	Wed May 06 22:42:46 BST 2009	org.apache.commons.io.filefilter

PrefixFileFilter

• java.lang.Object
  • org.apache.commons.io.filefilter.AbstractFileFilter

File dir = new File(".");
String[] files = dir.list( new PrefixFileFilter("Test") );
for ( int i = 0; i < files.length; i++ ) {
System.out.println(files[i]);
}

Fields Summary
private final String[]	prefixes The filename prefixes to search for
private final IOCase	caseSensitivity Whether the comparison is case sensitive.

Constructors Summary
public PrefixFileFilter(String prefix) Constructs a new Prefix file filter for a single prefix. param prefix the prefix to allow, must not be null throws IllegalArgumentException if the prefix is null this(prefix, IOCase.SENSITIVE);
public PrefixFileFilter(String prefix, IOCase caseSensitivity) Constructs a new Prefix file filter for a single prefix specifying case-sensitivity. param prefix the prefix to allow, must not be null param caseSensitivity how to handle case sensitivity, null means case-sensitive throws IllegalArgumentException if the prefix is null since Commons IO 1.4 if (prefix == null) { throw new IllegalArgumentException("The prefix must not be null"); } this.prefixes = new String[] {prefix}; this.caseSensitivity = (caseSensitivity == null ? IOCase.SENSITIVE : caseSensitivity);
public PrefixFileFilter(String[] prefixes) Constructs a new Prefix file filter for any of an array of prefixes. The array is not cloned, so could be changed after constructing the instance. This would be inadvisable however. param prefixes the prefixes to allow, must not be null throws IllegalArgumentException if the prefix array is null this(prefixes, IOCase.SENSITIVE);
public PrefixFileFilter(String[] prefixes, IOCase caseSensitivity) Constructs a new Prefix file filter for any of an array of prefixes specifying case-sensitivity. The array is not cloned, so could be changed after constructing the instance. This would be inadvisable however. param prefixes the prefixes to allow, must not be null param caseSensitivity how to handle case sensitivity, null means case-sensitive throws IllegalArgumentException if the prefix is null since Commons IO 1.4 if (prefixes == null) { throw new IllegalArgumentException("The array of prefixes must not be null"); } this.prefixes = prefixes; this.caseSensitivity = (caseSensitivity == null ? IOCase.SENSITIVE : caseSensitivity);
public PrefixFileFilter(List prefixes) Constructs a new Prefix file filter for a list of prefixes. param prefixes the prefixes to allow, must not be null throws IllegalArgumentException if the prefix list is null throws ClassCastException if the list does not contain Strings this(prefixes, IOCase.SENSITIVE);
public PrefixFileFilter(List prefixes, IOCase caseSensitivity) Constructs a new Prefix file filter for a list of prefixes specifying case-sensitivity. param prefixes the prefixes to allow, must not be null param caseSensitivity how to handle case sensitivity, null means case-sensitive throws IllegalArgumentException if the prefix list is null throws ClassCastException if the list does not contain Strings since Commons IO 1.4 if (prefixes == null) { throw new IllegalArgumentException("The list of prefixes must not be null"); } this.prefixes = (String[]) prefixes.toArray(new String[prefixes.size()]); this.caseSensitivity = (caseSensitivity == null ? IOCase.SENSITIVE : caseSensitivity);

Methods Summary
public boolean	accept(java.io.File file) Checks to see if the filename starts with the prefix. param file the File to check return true if the filename starts with one of our prefixes String name = file.getName(); for (int i = 0; i < this.prefixes.length; i++) { if (caseSensitivity.checkStartsWith(name, prefixes[i])) { return true; } } return false;
public boolean	accept(java.io.File file, java.lang.String name) Checks to see if the filename starts with the prefix. param file the File directory param name the filename return true if the filename starts with one of our prefixes for (int i = 0; i < prefixes.length; i++) { if (caseSensitivity.checkStartsWith(name, prefixes[i])) { return true; } } return false;
public java.lang.String	toString() Provide a String representaion of this file filter. return a String representaion StringBuffer buffer = new StringBuffer(); buffer.append(super.toString()); buffer.append("("); if (prefixes != null) { for (int i = 0; i < prefixes.length; i++) { if (i > 0) { buffer.append(","); } buffer.append(prefixes[i]); } } buffer.append(")"); return buffer.toString();