Bug 39038 method SWTUtil.getButtonHeigthHint is misspelled [misc]
"getButtonHeigthHint" should be spelled "getButtonHeightHint". The "Height" part is spelled incorrectly. This is an internal API -- package org.eclipse.jdt.internal.ui.util -- so this is not a user-visible bug, strictly speaking, but it would be trivial to fix.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/JarManifestWizardPage.java
if (fJarPackage.getManifestLocation().toString().length() == 0)
					setErrorMessage(JarPackagerMessages.getString("JarManifestWizardPage.error.noManifestFile")); 
				else
					setErrorMessage(JarPackagerMessages.getString("JarManifestWizardPage.error.invalidManifestFile")); 
				return false;
			}
		}
		Set selectedPackages= getPackagesForSelectedResources(fJarPackage);
		if (fJarPackage.isJarSealed()
				&& !selectedPackages.containsAll(Arrays.asList(fJarPackage.getPackagesToUnseal()))) {
			setErrorMessage(JarPackagerMessages.getString("JarManifestWizardPage.error.unsealedPackagesNotInSelection")); 
			return false;
		}
		if (!fJarPackage.isJarSealed()
				&& !selectedPackages.containsAll(Arrays.asList(fJarPackage.getPackagesToSeal()))) {
			setErrorMessage(JarPackagerMessages.getString("JarManifestWizardPage.error.sealedPackagesNotInSelection")); 
			return false;
		}
		if (!fJarPackage.isMainClassValid(getContainer()) || (fJarPackage.getManifestMainClass() == null && fMainClassText.getText().length() > 0)) {
			setErrorMessage(JarPackagerMessages.getString("JarManifestWizardPage.error.invalidMainClass")); 
			return false;
		}
		setErrorMessage(null);
		return isPageComplete;
	}
	/* 
	 * Implements method from IWizardPage.
	 */
	public void setPreviousPage(IWizardPage page) {
		super.setPreviousPage(page);