Made implicit overrides explicit.

jplag.frontend.java-1.9/src/main/java/jplag/java19/JavaToken.java

@@ -8,27 +8,33 @@ public class JavaToken extends jplag.Token implements JavaTokenConstants {
 		super(type, file, col,line,length);
 	}
 
-	public int getLine() {
+	@Override
+    public int getLine() {
 		return line;
 	}
 
-	public int getColumn() {
+	@Override
+    public int getColumn() {
 		return column;
 	}
 
-	public int getLength() {
+	@Override
+    public int getLength() {
 		return length;
 	}
 
-	public void setLine(int line) {
+	@Override
+    public void setLine(int line) {
 		this.line = line;
 	}
 
-	public void setColumn(int column) {
+	@Override
+    public void setColumn(int column) {
 		this.column = column;
 	}
 
-	public void setLength(int length) {
+	@Override
+    public void setLength(int length) {
 		this.length = length;
 	}
 

jplag.frontend.java-1.9/src/main/java/jplag/java19/Language.java

@@ -16,51 +16,63 @@ public class Language implements jplag.Language {
         this.parser.setProgram(program);
     }
 
+    @Override
     public String[] suffixes() {
         String[] res = {".java", ".JAVA"};
         return res;
     }
 
+    @Override
     public String name() {
         return "Javac 1.9+ based AST plugin";
     }
 
+    @Override
     public String getShortName() {
         return "java19";
     }
 
+    @Override
     public int min_token_match() {
         return 9;
     }
 
+    @Override
     public boolean supportsColumns() {
         return true;
     }
 
+    @Override
     public boolean isPreformatted() {
         return true;
     }
 
+    @Override
     public boolean usesIndex() {
         return false;
     }
 
+    @Override
     public int noOfTokens() {
         return JavaToken.numberOfTokens();
     }
 
+    @Override
     public String type2string(int type) {
         return JavaToken.type2string(type);
     }
 
+    @Override
     public Structure parse(File dir, String[] files) {
         return this.parser.parse(dir, files);
     }
 
+    @Override
     public boolean errors() {
         return this.parser.getErrors();
     }
 
+    @Override
     public int errorsCount() {
         return this.parser.errorsCount();
     }