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1 package net.sourceforge.pmd.rules; 2 3 import net.sourceforge.pmd.AbstractRule; 4 import net.sourceforge.pmd.RuleContext; 5 import net.sourceforge.pmd.ast.ASTConstructorDeclaration; 6 import net.sourceforge.pmd.ast.ASTUnmodifiedClassDeclaration; 7 8 import java.util.ArrayList; 9 import java.util.List; 10 11 public class AtLeastOneConstructorRule extends AbstractRule { 12 13 public Object visit(ASTUnmodifiedClassDeclaration node, Object data) { 14 List constructors = new ArrayList(); 15 node.findChildrenOfType(ASTConstructorDeclaration.class, constructors, false); 16 if (constructors.isEmpty()) { 17 RuleContext ctx = (RuleContext) data; 18 ctx.getReport().addRuleViolation(createRuleViolation(ctx, node.getBeginLine())); 19 } 20 return super.visit(node, data); 21 } 22 }

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