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/*
* Copyright (C) 2007-2010 Júlio Vilmar Gesser.
* Copyright (C) 2011, 2013-2016 The JavaParser Team.
*
* This file is part of JavaParser.
*
* JavaParser can be used either under the terms of
* a) the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* b) the terms of the Apache License
*
* You should have received a copy of both licenses in LICENCE.LGPL and
* LICENCE.APACHE. Please refer to those files for details.
*
* JavaParser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
package com.github.javaparser.wiki_samples;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.Modifier;
import com.github.javaparser.ast.PackageDeclaration;
import com.github.javaparser.ast.body.ClassOrInterfaceDeclaration;
import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.body.Parameter;
import com.github.javaparser.ast.expr.*;
import com.github.javaparser.ast.stmt.BlockStmt;
import com.github.javaparser.ast.type.ClassOrInterfaceType;
import com.github.javaparser.ast.type.VoidType;
import java.util.EnumSet;
import static com.github.javaparser.JavaParser.parseClassOrInterfaceType;
import static com.github.javaparser.JavaParser.parseName;
public class ClassCreator {
public static void main(String[] args) throws Exception {
// creates the compilation unit
CompilationUnit cu = createCU();
// prints the created compilation unit
System.out.println(cu.toString());
}
/**
* creates the compilation unit
*/
private static CompilationUnit createCU() {
CompilationUnit cu = new CompilationUnit();
// set the package
cu.setPackageDeclaration(new PackageDeclaration(parseName("java.parser.test")));
// or a shortcut
cu.setPackageDeclaration("java.parser.test");
// create the type declaration
ClassOrInterfaceDeclaration type = cu.addClass("GeneratedClass");
// create a method
EnumSet<Modifier> modifiers = EnumSet.of(Modifier.PUBLIC);
MethodDeclaration method = new MethodDeclaration(modifiers, new VoidType(), "main");
modifiers.add(Modifier.STATIC);
method.setModifiers(modifiers);
type.addMember(method);
// or a shortcut
MethodDeclaration main2 = type.addMethod("main2", Modifier.PUBLIC, Modifier.STATIC);
// add a parameter to the method
Parameter param = new Parameter(parseClassOrInterfaceType("String"), "args");
param.setVarArgs(true);
method.addParameter(param);
// or a shortcut
main2.addAndGetParameter(String.class, "args").setVarArgs(true);
// add a body to the method
BlockStmt block = new BlockStmt();
method.setBody(block);
// add a statement to the method body
NameExpr clazz = new NameExpr("System");
FieldAccessExpr field = new FieldAccessExpr(clazz, "out");
MethodCallExpr call = new MethodCallExpr(field, "println");
call.addArgument(new StringLiteralExpr("Hello World!"));
block.addStatement(call);
return cu;
}
}
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