Remove last Java 5 checks from UI

Having code to show errors if Java 5 JVM when Java UI migrates projects
to Java 8 is pointless.

Author: akurtakov

org.eclipse.jdt.core.manipulation/core extension/org/eclipse/jdt/internal/corext/refactoring/RefactoringCoreMessages.java

@@ -2471,8 +2471,6 @@ public final class RefactoringCoreMessages extends NLS {
 
 	public static String TypeContextChecker_invalid_type_syntax;
 
-	public static String TypeContextChecker_no_vararg_below_50;
-
 	public static String TypeContextChecker_not_unique;
 
 	public static String TypeContextChecker_parameter_type;

org.eclipse.jdt.core.manipulation/core extension/org/eclipse/jdt/internal/corext/refactoring/TypeContextChecker.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2020 IBM Corporation and others.
+ * Copyright (c) 2000, 2024 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -493,11 +493,6 @@ public static RefactoringStatus checkParameterTypeSyntax(String type, IJavaProje
 			return RefactoringStatus.createFatalErrorStatus(msg);
 		}
 
-		if (ParameterInfo.isVarargs(type) && ! JavaModelUtil.is50OrHigher(project)) {
-			String msg= Messages.format(RefactoringCoreMessages.TypeContextChecker_no_vararg_below_50, typeLabel);
-			return RefactoringStatus.createFatalErrorStatus(msg);
-		}
-
 		List<String> problemsCollector= new ArrayList<>(0);
 		Type parsedType= parseType(newTypeName, project, problemsCollector);
 		boolean valid= parsedType != null;

org.eclipse.jdt.core.manipulation/core extension/org/eclipse/jdt/internal/corext/refactoring/refactoring.properties

@@ -850,7 +850,6 @@ TypeContextChecker_couldNotResolveType=Could not resolve type ''{0}''.
 TypeContextChecker_ambiguous=Parameter type name ''{0}'' is ambiguous. There are {1} types with that name.
 TypeContextChecker_not_unique=Parameter type name ''{0}'' cannot be uniquely resolved or is not a valid type name.
 TypeContextChecker_parameter_type=Enter the type for parameter ''{0}''.
-TypeContextChecker_no_vararg_below_50=''{0}'' is not a valid parameter type; variable arity parameters are only supported if the source level is 1.5.
 TypeContextChecker_invalid_type_name=''{0}'' is not a valid parameter type.
 TypeContextChecker_invalid_type_syntax=''{0}'' is not a valid parameter type: {1}.
 TypeContextChecker_return_type_not_empty=The return type cannot be empty.

org.eclipse.jdt.core.manipulation/core extension/org/eclipse/jdt/internal/corext/util/JavaModelUtil.java

@@ -787,11 +787,6 @@ public static boolean isVersionLessThan(String version1, String version2) {
 		return JavaCore.compareJavaVersions(version1, version2) < 0;
 	}
 
-
-	public static boolean is50OrHigher(String compliance) {
-		return !isVersionLessThan(compliance, JavaCore.VERSION_1_5);
-	}
-
 	public static boolean is1d7OrHigher(String compliance) {
 		return !isVersionLessThan(compliance, JavaCore.VERSION_1_7);
 	}
@@ -860,16 +855,6 @@ public static boolean is23OrHigher(String compliance) {
 		return !isVersionLessThan(compliance, JavaCore.VERSION_23);
 	}
 
-	/**
-	 * Checks if the given project or workspace has source compliance 1.5 or greater.
-	 *
-	 * @param project the project to test or <code>null</code> to test the workspace settings
-	 * @return <code>true</code> if the given project or workspace has source compliance 1.5 or greater.
-	 */
-	public static boolean is50OrHigher(IJavaProject project) {
-		return is50OrHigher(getSourceCompliance(project));
-	}
-
 	/**
 	 * Checks if the given project or workspace has source compliance 1.7 or greater.
 	 *

org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/NewWizardMessages.java

@@ -115,7 +115,6 @@ private NewWizardMessages() {
 	public static String NewTypeWizardPage_error_PackageNameEmptyForModule;
 	public static String NewTypeWizardPage_warning_DiscouragedPackageName;
 	public static String NewTypeWizardPage_warning_DefaultPackageDiscouraged;
-	public static String NewTypeWizardPage_warning_NotJDKCompliant;
 	public static String NewTypeWizardPage_warning_NotJDKCompliant2;
 	public static String NewTypeWizardPage_warning_EnumClassNotFound;
 	public static String NewTypeWizardPage_warning_RecordClassNotFound;
@@ -158,13 +157,10 @@ private NewWizardMessages() {
 	public static String NewTypeWizardPage_error_QualifiedName;
 	public static String NewTypeWizardPage_info_FileExtensionNotRequired;
 	public static String NewTypeWizardPage_warning_TypeNameDiscouraged;
-	public static String NewTypeWizardPage_error_TypeParameters;
 	public static String NewTypeWizardPage_error_InvalidSuperClassName;
 	public static String NewTypeWizardPage_error_InvalidSuperClassRecord;
 	public static String NewTypeWizardPage_error_InvalidFinalSuperClass;
-	public static String NewTypeWizardPage_error_SuperClassNotParameterized;
 	public static String NewTypeWizardPage_error_InvalidSuperInterfaceName;
-	public static String NewTypeWizardPage_error_SuperInterfaceNotParameterized;
 	public static String NewTypeWizardPage_error_ModifiersFinalAndAbstract;
 	public static String NewTypeWizardPage_error_TypeNameFiltered;
 	public static String NewTypeWizardPage_error_PackageNameFiltered;

org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/NewWizardMessages.properties

@@ -90,7 +90,6 @@ NewTypeWizardPage_error_PackageNameEmptyForModule=A package name must be specifi
 NewTypeWizardPage_error_uri_location_unkown=Cannot locate resource {0}
 NewTypeWizardPage_warning_DiscouragedPackageName=This package name is discouraged. {0}
 NewTypeWizardPage_warning_DefaultPackageDiscouraged=The use of the default package is discouraged.
-NewTypeWizardPage_warning_NotJDKCompliant=Project ''{0}'' is not a J2SE 5.0 compliant project.
 NewTypeWizardPage_warning_NotJDKCompliant2=Project ''{0}'' is not a Java {1} compliant project.
 NewTypeWizardPage_warning_EnumClassNotFound=Type 'java.lang.Enum' is not on the project's build path. Make sure you use a 1.5 JDK.
 NewTypeWizardPage_warning_RecordClassNotFound=Type 'java.lang.Record' is not on the project's build path. Make sure you use a 14 JDK.
@@ -140,12 +139,9 @@ NewTypeWizardPage_error_InvalidTypeName=Type name is not valid. {0}
 NewTypeWizardPage_error_QualifiedName=Type name must not be qualified.
 NewTypeWizardPage_info_FileExtensionNotRequired=The file extension '.java' will not be part of the type name.
 NewTypeWizardPage_warning_TypeNameDiscouraged=Type name is discouraged. {0}
-NewTypeWizardPage_error_TypeParameters=Type name is not valid. Type parameters are only available if source level is 1.5.
 
 NewTypeWizardPage_error_InvalidSuperClassName=Superclass type is not valid.
-NewTypeWizardPage_error_SuperClassNotParameterized=Superclass cannot be parameterized unless source level is 1.5.
 NewTypeWizardPage_error_InvalidSuperInterfaceName=Extended interface ''{0}'' is not valid.
-NewTypeWizardPage_error_SuperInterfaceNotParameterized=Extended interface ''{0}'' cannot be parameterized unless source level is 1.5.
 NewTypeWizardPage_error_InvalidSuperClassRecord=Record ''{0}'' cannot be superclass. A record is final.
 NewTypeWizardPage_error_InvalidFinalSuperClass=Class ''{0}'' cannot be superclass as it is final.  
 

org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewTypeWizardPage.java

@@ -108,7 +108,6 @@
 import org.eclipse.jdt.core.dom.CompilationUnit;
 import org.eclipse.jdt.core.dom.ITypeBinding;
 import org.eclipse.jdt.core.dom.ImportDeclaration;
-import org.eclipse.jdt.core.dom.ParameterizedType;
 import org.eclipse.jdt.core.dom.Type;
 import org.eclipse.jdt.core.dom.TypeDeclaration;
 import org.eclipse.jdt.core.dom.rewrite.ASTRewrite;
@@ -1834,10 +1833,6 @@ protected IStatus containerChanged() {
 		IStatus status= super.containerChanged();
 	    IPackageFragmentRoot root= getPackageFragmentRoot();
 		if ((fTypeKind == ANNOTATION_TYPE || fTypeKind == ENUM_TYPE) && !status.matches(IStatus.ERROR)) {
-	    	if (root != null && !JavaModelUtil.is50OrHigher(root.getJavaProject())) {
-	    		// error as createType will fail otherwise (bug 96928)
-	    		return new StatusInfo(IStatus.ERROR, Messages.format(NewWizardMessages.NewTypeWizardPage_warning_NotJDKCompliant, BasicElementLabels.getJavaElementName(root.getJavaProject().getElementName())));
-	    	}
 	    	if (root != null && fTypeKind == ENUM_TYPE) {
 		    	try {
 		    	    // if findType(...) == null then Enum is unavailable
@@ -2150,10 +2145,6 @@ protected IStatus typeNameChanged() {
 		}
 
 		if (!typeNameWithParameters.equals(typeName) && project != null) {
-			if (!JavaModelUtil.is50OrHigher(project)) {
-				status.setError(NewWizardMessages.NewTypeWizardPage_error_TypeParameters);
-				return status;
-			}
 			String typeDeclaration= "class " + typeNameWithParameters + " {}"; //$NON-NLS-1$//$NON-NLS-2$
 			ASTParser parser= ASTParser.newParser(IASTSharedValues.SHARED_AST_LEVEL);
 			parser.setSource(typeDeclaration.toCharArray());
@@ -2212,10 +2203,6 @@ protected IStatus superClassChanged() {
 				status.setError(NewWizardMessages.NewTypeWizardPage_error_InvalidSuperClassName);
 				return status;
 			}
-			if (type instanceof ParameterizedType && ! JavaModelUtil.is50OrHigher(root.getJavaProject())) {
-				status.setError(NewWizardMessages.NewTypeWizardPage_error_SuperClassNotParameterized);
-				return status;
-			}
 		} else {
 			status.setError(""); //$NON-NLS-1$
 		}
@@ -2480,10 +2467,6 @@ protected IStatus superInterfacesChanged() {
 					status.setError(Messages.format(NewWizardMessages.NewTypeWizardPage_error_InvalidSuperInterfaceName, BasicElementLabels.getJavaElementName(intfname)));
 					return status;
 				}
-				if (type instanceof ParameterizedType && ! JavaModelUtil.is50OrHigher(root.getJavaProject())) {
-					status.setError(Messages.format(NewWizardMessages.NewTypeWizardPage_error_SuperInterfaceNotParameterized, BasicElementLabels.getJavaElementName(intfname)));
-					return status;
-				}
 			}
 		}
 		fSealedSuperInterfacesStatus= validateSealedSuperInterfacesStatus();