Bug 94367 cannot clear compiler compliance setting at the project level
i200505092010 Cannot disable the Java compiler project-specific preferences for some projects. Steps to reproduce: 1 - check out from CVS a Java project that has project-specific Java compiler settings enabled (example: org.eclipse.core.runtime). 2 - open the properties dialog for the project, select the Java compiler node, disable project-specific Java compiler preferences. 3 - Commit the changes by pressing "Ok" and reopen the properties dialog. It looks like the settings were not saved (project-specific settings are still enabled).
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/OptionsConfigurationBlock.java
private Key fKey;
		private String[] fValues;
		
		public ControlData(Key key, String[] values) {
			fKey= key;
			fValues= values;
		}
		
		public Key getKey() {
			return fKey;
		}
		
		public String getValue(boolean selection) {
			int index= selection ? 0 : 1;
			return fValues[index];
		}
		
		public String getValue(int index) {
			return fValues[index];
		}		
		
		public int getSelection(String value) {
			if (value != null) {
				for (int i= 0; i < fValues.length; i++) {
					if (value.equals(fValues[i])) {
						return i;
					}
				}