Added the StatementBuilder

src/main/java/de/gnmyt/sqltoolkit/querybuilder/StatementBuilder.java

@@ -0,0 +1,47 @@
+package de.gnmyt.sqltoolkit.querybuilder;
+
+public class StatementBuilder {
+
+    private StringBuilder query = new StringBuilder();
+
+    /**
+     * Basic constructor of the {@link StatementBuilder} with a prefilled text
+     * @param text The text you want to add
+     */
+    public StatementBuilder(String text) {
+        append(text);
+    }
+
+    /**
+     * Basic constructor of the {@link StatementBuilder}
+     */
+    public StatementBuilder() {
+
+    }
+
+    /**
+     * Adds a text to the query with spaces
+     * @param text The text you want to add
+     * @return this class
+     */
+    public StatementBuilder append(String text) {
+        if (text.isEmpty()) return this;
+
+        if (!query.toString().isEmpty()) query.append(" ");
+        query.append(text);
+        return this;
+    }
+
+    /**
+     * Builds the query string
+     * @return the built string
+     */
+    public String build() {
+        return query.toString();
+    }
+
+    @Override
+    public String toString() {
+        return build();
+    }
+}