diff --git a/AlgebraicDataflowArchitectureModel/src/java/ast/ASTNode.java b/AlgebraicDataflowArchitectureModel/src/java/ast/ASTNode.java
new file mode 100644
index 0000000..0d600e0
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/src/java/ast/ASTNode.java
@@ -0,0 +1,13 @@
+package java.ast;
+
+public abstract class ASTNode {
+	private ASTNode parent;
+
+	public ASTNode getParent() {
+		return parent;
+	}
+
+	public void setParent(ASTNode parent) {
+		this.parent = parent;
+	}
+}
diff --git a/AlgebraicDataflowArchitectureModel/src/java/ast/AbstractTypeDeclaration.java b/AlgebraicDataflowArchitectureModel/src/java/ast/AbstractTypeDeclaration.java
new file mode 100644
index 0000000..52de580
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/src/java/ast/AbstractTypeDeclaration.java
@@ -0,0 +1,13 @@
+package java.ast;
+
+public class AbstractTypeDeclaration extends BodyDeclaration {
+	protected String typeName = null;
+
+	public String getTypeName() {
+		return typeName;
+	}
+
+	public void setTypeName(String typeName) {
+		this.typeName = typeName;
+	}
+}
diff --git a/AlgebraicDataflowArchitectureModel/src/java/ast/Block.java b/AlgebraicDataflowArchitectureModel/src/java/ast/Block.java
new file mode 100644
index 0000000..48a98c7
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/src/java/ast/Block.java
@@ -0,0 +1,20 @@
+package java.ast;
+
+import java.util.List;
+import java.util.ArrayList;
+
+public class Block extends ASTNode {
+	private List<String> statements = new ArrayList<String>();
+
+	public List<String> getStatements() {
+		return statements;
+	}
+
+	public void setStatements(List<String> statements) {
+		this.statements = statements;
+	}
+	
+	public void addStatement(String statement) {
+		statements.add(statement);
+	}
+}
diff --git a/AlgebraicDataflowArchitectureModel/src/java/ast/BodyDeclaration.java b/AlgebraicDataflowArchitectureModel/src/java/ast/BodyDeclaration.java
new file mode 100644
index 0000000..2bfedd7
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/src/java/ast/BodyDeclaration.java
@@ -0,0 +1,13 @@
+package java.ast;
+
+public abstract class BodyDeclaration extends ASTNode {
+	private int modifiers = 0;
+
+	public int getModifiers() {
+		return modifiers;
+	}
+
+	public void setModifiers(int modifiers) {
+		this.modifiers = modifiers;
+	}
+}
diff --git a/AlgebraicDataflowArchitectureModel/src/java/ast/FieldDeclaration.java b/AlgebraicDataflowArchitectureModel/src/java/ast/FieldDeclaration.java
new file mode 100644
index 0000000..583d3a0
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/src/java/ast/FieldDeclaration.java
@@ -0,0 +1,29 @@
+package java.ast;
+
+import models.algebra.Type;
+
+public class FieldDeclaration extends BodyDeclaration {
+	private Type type;
+	private String fieldName;
+	
+	public FieldDeclaration(Type type, String fieldName) {
+		this.type = type;
+		this.fieldName = fieldName;
+	}
+
+	public Type getType() {
+		return type;
+	}
+
+	public void setType(Type type) {
+		this.type = type;
+	}
+
+	public String getName() {
+		return fieldName;
+	}
+
+	public void setName(String fieldName) {
+		this.fieldName = fieldName;
+	}	
+}
diff --git a/AlgebraicDataflowArchitectureModel/src/java/ast/MethodDeclaration.java b/AlgebraicDataflowArchitectureModel/src/java/ast/MethodDeclaration.java
new file mode 100644
index 0000000..1099dc4
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/src/java/ast/MethodDeclaration.java
@@ -0,0 +1,87 @@
+package java.ast;
+
+import java.util.List;
+import java.util.ArrayList;
+import models.algebra.Type;
+
+public class MethodDeclaration extends BodyDeclaration {
+	private String name = null;
+	private boolean isConstructor = false;
+	private Type returnType = null;
+	private List<VariableDeclaration> parameters = null;
+	private Block body = null;
+	
+	public MethodDeclaration(String methodName) {
+		this(methodName, false);
+	}
+	
+	public MethodDeclaration(String methodName, boolean isConstructor) {
+		this.name = methodName;
+		this.isConstructor = isConstructor;
+	}
+	
+	public MethodDeclaration(String methodName, boolean isConstructor, Type returnType, List<VariableDeclaration> parameters) {
+		this(methodName, isConstructor, returnType, parameters, null);
+	}
+	
+	public MethodDeclaration(String methodName, boolean isConstructor, Type returnType, List<VariableDeclaration> parameters, Block body) {
+		this(methodName, isConstructor);
+		this.returnType = returnType;
+		this.parameters = parameters;
+		this.body = body;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public boolean isConstructor() {
+		return isConstructor;
+	}
+
+	public void setConstructor(boolean isConstructor) {
+		this.isConstructor = isConstructor;
+	}
+
+	public Type getReturnType() {
+		return returnType;
+	}
+
+	public void setReturnType(Type returnType) {
+		this.returnType = returnType;
+	}
+
+	public List<VariableDeclaration> getParameters() {
+		return parameters;
+	}
+
+	public void setParameters(List<VariableDeclaration> parameters) {
+		this.parameters = parameters;
+	}
+	
+	public void addParameter(VariableDeclaration parameter) {
+		if (parameters == null) {
+			parameters = new ArrayList<>();
+		}
+		parameters.add(parameter);
+	}
+
+	public Block getBody() {
+		return body;
+	}
+
+	public void setBody(Block body) {
+		this.body = body;
+	}
+	
+	public void addStatement(String statement) {
+		if (body == null) {
+			body = new Block();
+		}
+		body.addStatement(statement);
+	}
+}
diff --git a/AlgebraicDataflowArchitectureModel/src/java/ast/Modifier.java b/AlgebraicDataflowArchitectureModel/src/java/ast/Modifier.java
new file mode 100644
index 0000000..564c8f1
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/src/java/ast/Modifier.java
@@ -0,0 +1,29 @@
+package java.ast;
+
+public class Modifier extends ASTNode {
+	public static final int ABSTRACT = 0x0400;
+	public static final int PRIVATE = 0x0002;
+	public static final int PROTECTED = 0x0004;
+	public static final int PUBLIC = 0x0001;
+	public static final int STATIC = 0x0008;
+
+	public static boolean isAbstract(int flags) {
+		return (flags & ABSTRACT) != 0;
+	}
+	
+	public static boolean isPrivate(int flags) {
+		return (flags & PRIVATE) != 0;
+	}
+	
+	public static boolean isProtected(int flags) {
+		return (flags & PROTECTED) != 0;
+	}
+
+	public static boolean isPublic(int flags) {
+		return (flags & PUBLIC) != 0;
+	}
+	
+	public static boolean isStatic(int flags) {
+		return (flags & STATIC) != 0;
+	}
+}
diff --git a/AlgebraicDataflowArchitectureModel/src/java/ast/TypeDeclaration.java b/AlgebraicDataflowArchitectureModel/src/java/ast/TypeDeclaration.java
new file mode 100644
index 0000000..9e50149
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/src/java/ast/TypeDeclaration.java
@@ -0,0 +1,41 @@
+package java.ast;
+
+import java.util.List;
+import java.util.ArrayList;
+
+public class TypeDeclaration extends AbstractTypeDeclaration {
+	private List<FieldDeclaration> fields = new ArrayList<>();
+	private List<MethodDeclaration> methods = new ArrayList<>();
+	
+	public TypeDeclaration(String typeName) {
+		this.typeName = typeName;
+	}
+	
+	public TypeDeclaration(String typeName, List<FieldDeclaration> fields) {
+		this.typeName = typeName;
+		this.fields = fields;
+	}
+	
+	public TypeDeclaration(String typeName, List<FieldDeclaration> fields, List<MethodDeclaration> methods) {
+		this.typeName = typeName;
+		this.fields = fields;
+		this.methods = methods;
+	}
+	
+	public void addField(FieldDeclaration field) {
+		fields.add(field);
+	}
+	
+	public void addMethod(MethodDeclaration method) {
+		methods.add(method);
+	}
+	
+	public List<FieldDeclaration> getFields() {
+		return fields;
+	}
+	
+	public List<MethodDeclaration> getMethods() {
+		return methods;
+	}
+	
+}
diff --git a/AlgebraicDataflowArchitectureModel/src/java/ast/VariableDeclaration.java b/AlgebraicDataflowArchitectureModel/src/java/ast/VariableDeclaration.java
new file mode 100644
index 0000000..e2ea48e
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/src/java/ast/VariableDeclaration.java
@@ -0,0 +1,29 @@
+package java.ast;
+
+import models.algebra.Type;
+
+public class VariableDeclaration extends ASTNode {
+	private Type type;
+	private String variableName;
+	
+	public VariableDeclaration(Type type, String variableName) {
+		this.type = type;
+		this.variableName = variableName;
+	}
+
+	public Type getType() {
+		return type;
+	}
+
+	public void setType(Type type) {
+		this.type = type;
+	}
+
+	public String getName() {
+		return variableName;
+	}
+
+	public void setName(String variableName) {
+		this.variableName = variableName;
+	}
+}