bug 61059: add @Override annotations

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1793418 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/ss/formula/ptg/NamePtg.java

@@ -42,7 +42,6 @@ public final class NamePtg extends OperandPtg implements WorkbookDependentFormul
 	}
 
 	/** Creates new NamePtg */
-
 	public NamePtg(LittleEndianInput in)  {
 		field_1_label_index = in.readShort();
 		field_2_zero = in.readShort();
@@ -55,24 +54,29 @@ public final class NamePtg extends OperandPtg implements WorkbookDependentFormul
 		return field_1_label_index - 1; // convert to zero based
 	}
 
+	@Override
 	public void write(LittleEndianOutput out) {
 		out.writeByte(sid + getPtgClass());
 		out.writeShort(field_1_label_index);
 		out.writeShort(field_2_zero);
 	}
 
+	@Override
 	public int getSize() {
 		return SIZE;
 	}
 
+	@Override
 	public String toFormulaString(FormulaRenderingWorkbook book) {
 		return book.getNameText(this);
 	}
 
+	@Override
 	public String toFormulaString() {
 		throw new RuntimeException("3D references need a workbook to determine formula text");
 	}
 
+	@Override
 	public byte getDefaultOperandClass() {
 		return Ptg.CLASS_REF;
 	}