Let's see 4 cases:

1) first font is equal to the second one:
        Font f1 = new Font( "serif", Font.BOLD, 12 );
        Font f2 = new Font( "serif", Font.BOLD, 12 );
        System.out.println( f1.equals( f2 ) );
EXPECT: true
ACTUAL: true

2) first font is equal to the second one:
        Font f1 = new Font( "serif", Font.BOLD, 12 ); f1.getAttributes();
        Font f2 = new Font( "serif", Font.BOLD, 12 );
        System.out.println( f1.equals( f2 ) );
EXPECT: true
ACTUAL: false

3) first font is equal to the second one:
        Font f1 = new Font( "serif", Font.BOLD, 12 );
        Font f2 = new Font( "serif", Font.BOLD, 12 ); f2.getAttributes();
        System.out.println( f1.equals( f2 ) );
EXPECT: true
ACTUAL: false

4) first font is equal to the second one:
        Font f1 = new Font( "serif", Font.BOLD, 12 ); f1.getAttributes();
        Font f2 = new Font( "serif", Font.BOLD, 12 ); f2.getAttributes();
        System.out.println( f1.equals( f2 ) );
EXPECT: true
ACTUAL: true

Sources are attached.